[PATCH v4 0/6] hwmon: Add support for SPD5118 compliant chips

[PATCH v4 0/6] hwmon: Add support for SPD5118 compliant chips

[Guenter Roeck]

Add support for SPD5118 (Jedec JESD300) compliant chips supporting
a temperature sensor and SPD NVRAM. Such devices are typically found on
DDR5 memory modules.

The first patch of the series adds SPD5118 devicetree bindings. The second
patch adds support for SPD5118 temperature sensors. The third patch adds
support for suspend/resume. The 4th patch adds support for reading the
SPD NVRAM. The 5th patch adds support for auto-detecting SPD5118 compliant
chips to i2c_register_spd() in the i2c-smbus code. The last patch of the
series adds a configuration option to make the auto-detect code in the
spd5118 driver configurable.

Note: The driver introduced with this patch series does not currently
support accessing SPD5118 compliant chips in I3C mode.

v4: Add support for detecting SPD5118 compliant chips in i2c-smbus driver
    Make auto-detect code in driver optional
    Fix suspend code
    Ignore failure to register with nvmem core if it is disabled
    Use NVMEM_DEVID_NONE instead of NVMEM_DEVID_AUTO in nvmem code,
    changing nvmem attribute directories from 0-005[0-7]X to 0-005[0-7]

v3: Drop explicit bindings document; add binding to trivial devices instead
    Add support for reading SPD NVRAM

v2: Drop PEC support; it only applies to I3C mode.
    Update documentation
    Add suspend/resume support 

----------------------------------------------------------------
Guenter Roeck (6):
      dt-bindings: trivial-devices: Add jedec,spd5118
      hwmon: Add support for SPD5118 compliant temperature sensors
      hwmon: (spd5118) Add suspend/resume support
      hwmon: (spd5118) Add support for reading SPD data
      i2c: smbus: Support DDR5 SPD EEPROMs
      hwmon: (spd5118) Add configuration option for auto-detection

 .../devicetree/bindings/trivial-devices.yaml       |   2 +
 Documentation/hwmon/index.rst                      |   1 +
 Documentation/hwmon/spd5118.rst                    |  63 ++
 drivers/hwmon/Kconfig                              |  30 +
 drivers/hwmon/Makefile                             |   1 +
 drivers/hwmon/spd5118.c                            | 661 +++++++++++++++++++++
 drivers/i2c/i2c-smbus.c                            |   4 +
 7 files changed, 762 insertions(+)
 create mode 100644 Documentation/hwmon/spd5118.rst
 create mode 100644 drivers/hwmon/spd5118.c

[PATCH v4 1/6] dt-bindings: trivial-devices: Add jedec,spd5118

[Guenter Roeck]

Add bindings for the SPD hub present in DDR5 modules.
(https://www.jedec.org/standards-documents/docs/jesd300-5b01).

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v4: Add Krzysztof's Acked-by:

v3: Drop explicit bindings file; add binding to trivial devices
    instead


 Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 0a419453d183..1d19e67de2a1 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -168,6 +168,8 @@ properties:
           - isil,isl69269
             # Intersil ISL76682 Ambient Light Sensor
           - isil,isl76682
+            # JEDEC JESD300 (SPD5118) Hub and Serial Presence Detect
+          - jedec,spd5118
             # Linear Technology LTC2488
           - lineartechnology,ltc2488
             # 5 Bit Programmable, Pulse-Width Modulator
-- 
2.39.2

[PATCH v4 2/6] hwmon: Add support for SPD5118 compliant temperature sensors

[Guenter Roeck]

Add support for SPD5118 (Jedec JESD300) compliant temperature
sensors. Such sensors are typically found on DDR5 memory modules.

Cc: René Rebe <rene@exactcode.de>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Tested-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v4: No change

v3: Shorten JESD300-5B.01 to JESD300; 5B.01 refers to the version
    of the standard
    Drop unnecessary 'attr' parameter from spd5118_{read,write}_enable()

v2: Drop PEC property documentation
    Add note indicating that alarm attributes are sticky until read
    to documentation
    Fix detect function
    Fix misspelling in Makefile (CONFIG_SENSORS_SPD5118->CONFIG_SENSORS_SPD5118)

 Documentation/hwmon/index.rst   |   1 +
 Documentation/hwmon/spd5118.rst |  55 ++++
 drivers/hwmon/Kconfig           |  12 +
 drivers/hwmon/Makefile          |   1 +
 drivers/hwmon/spd5118.c         | 481 ++++++++++++++++++++++++++++++++
 5 files changed, 550 insertions(+)
 create mode 100644 Documentation/hwmon/spd5118.rst
 create mode 100644 drivers/hwmon/spd5118.c

diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 03d313af469a..6e7b8726b60c 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -215,6 +215,7 @@ Hardware Monitoring Kernel Drivers
    smsc47m192
    smsc47m1
    sparx5-temp
+   spd5118
    stpddc60
    surface_fan
    sy7636a-hwmon
diff --git a/Documentation/hwmon/spd5118.rst b/Documentation/hwmon/spd5118.rst
new file mode 100644
index 000000000000..a15d75aa2066
--- /dev/null
+++ b/Documentation/hwmon/spd5118.rst
@@ -0,0 +1,55 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver spd5118
+=====================
+
+Supported chips:
+
+  * SPD5118 (JEDEC JESD300) compliant temperature sensor chips
+
+    JEDEC standard download:
+	https://www.jedec.org/standards-documents/docs/jesd300-5b01
+	(account required)
+
+
+    Prefix: 'spd5118'
+
+    Addresses scanned: I2C 0x50 - 0x57
+
+Author:
+	Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+This driver implements support for SPD5118 (JEDEC JESD300) compliant temperature
+sensors, which are used on many DDR5 memory modules. Some systems use the sensor
+to prevent memory overheating by automatically throttling the memory controller.
+
+The driver auto-detects SPD5118 compliant chips, but can also be instantiated
+using devicetree/firmware nodes.
+
+A SPD5118 compliant chip supports a single temperature sensor. Critical minimum,
+minimum, maximum, and critical temperature can be configured. There are alarms
+for low critical, low, high, and critical thresholds.
+
+
+Hardware monitoring sysfs entries
+---------------------------------
+
+======================= ==================================
+temp1_input		Temperature (RO)
+temp1_lcrit		Low critical high temperature (RW)
+temp1_min		Minimum temperature (RW)
+temp1_max		Maximum temperature (RW)
+temp1_crit		Critical high temperature (RW)
+
+temp1_lcrit_alarm	Temperature low critical alarm
+temp1_min_alarm		Temperature low alarm
+temp1_max_alarm		Temperature high alarm
+temp1_crit_alarm	Temperature critical alarm
+======================= ==================================
+
+Alarm attributes are sticky until read and will be cleared afterwards
+unless the alarm condition still applies.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index e14ae18a973b..7a84e7637b51 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2181,6 +2181,18 @@ config SENSORS_INA3221
 	  This driver can also be built as a module. If so, the module
 	  will be called ina3221.
 
+config SENSORS_SPD5118
+	tristate "SPD5118 Compliant Temperature Sensors"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  If you say yes here you get support for SPD5118 (JEDEC JESD300)
+	  compliant temperature sensors. Such sensors are found on DDR5 memory
+	  modules.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called spd5118.
+
 config SENSORS_TC74
 	tristate "Microchip TC74"
 	depends on I2C
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index e3f25475d1f0..6574ca67d761 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -207,6 +207,7 @@ obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
 obj-$(CONFIG_SENSORS_SMSC47M1)	+= smsc47m1.o
 obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
 obj-$(CONFIG_SENSORS_SPARX5)	+= sparx5-temp.o
+obj-$(CONFIG_SENSORS_SPD5118)	+= spd5118.o
 obj-$(CONFIG_SENSORS_STTS751)	+= stts751.o
 obj-$(CONFIG_SENSORS_SURFACE_FAN)+= surface_fan.o
 obj-$(CONFIG_SENSORS_SY7636A)	+= sy7636a-hwmon.o
diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
new file mode 100644
index 000000000000..d3fc0ae17743
--- /dev/null
+++ b/drivers/hwmon/spd5118.c
@@ -0,0 +1,481 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for Jedec 5118 compliant temperature sensors
+ *
+ * Derived from https://github.com/Steve-Tech/SPD5118-DKMS
+ * Originally from T/2 driver at https://t2sde.org/packages/linux
+ *	Copyright (c) 2023 René Rebe, ExactCODE GmbH; Germany.
+ *
+ * Copyright (c) 2024 Guenter Roeck
+ *
+ * Inspired by ee1004.c and jc42.c.
+ *
+ * SPD5118 compliant temperature sensors are typically used on DDR5
+ * memory modules.
+ */
+
+#include <linux/bitops.h>
+#include <linux/bits.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = {
+	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, I2C_CLIENT_END };
+
+/* SPD5118 registers. */
+#define SPD5118_REG_TYPE		0x00	/* MR0:MR1 */
+#define SPD5118_REG_REVISION		0x02	/* MR2 */
+#define SPD5118_REG_VENDOR		0x03	/* MR3:MR4 */
+#define SPD5118_REG_CAPABILITY		0x05	/* MR5 */
+#define SPD5118_REG_I2C_LEGACY_MODE	0x0B	/* MR11 */
+#define SPD5118_REG_TEMP_CLR		0x13	/* MR19 */
+#define SPD5118_REG_ERROR_CLR		0x14	/* MR20 */
+#define SPD5118_REG_TEMP_CONFIG		0x1A	/* MR26 */
+#define SPD5118_REG_TEMP_MAX		0x1c	/* MR28:MR29 */
+#define SPD5118_REG_TEMP_MIN		0x1e	/* MR30:MR31 */
+#define SPD5118_REG_TEMP_CRIT		0x20	/* MR32:MR33 */
+#define SPD5118_REG_TEMP_LCRIT		0x22	/* MR34:MR35 */
+#define SPD5118_REG_TEMP		0x31	/* MR49:MR50 */
+#define SPD5118_REG_TEMP_STATUS		0x33	/* MR51 */
+
+#define SPD5118_TEMP_STATUS_HIGH	BIT(0)
+#define SPD5118_TEMP_STATUS_LOW		BIT(1)
+#define SPD5118_TEMP_STATUS_CRIT	BIT(2)
+#define SPD5118_TEMP_STATUS_LCRIT	BIT(3)
+
+#define SPD5118_CAP_TS_SUPPORT		BIT(1)	/* temperature sensor support */
+
+#define SPD5118_TS_DISABLE		BIT(0)	/* temperature sensor disable */
+
+/* Temperature unit in millicelsius */
+#define SPD5118_TEMP_UNIT		(MILLIDEGREE_PER_DEGREE / 4)
+/* Representable temperature range in millicelsius */
+#define SPD5118_TEMP_RANGE_MIN		-256000
+#define SPD5118_TEMP_RANGE_MAX		255750
+
+static int spd5118_temp_from_reg(u16 reg)
+{
+	int temp = sign_extend32(reg >> 2, 10);
+
+	return temp * SPD5118_TEMP_UNIT;
+}
+
+static u16 spd5118_temp_to_reg(long temp)
+{
+	temp = clamp_val(temp, SPD5118_TEMP_RANGE_MIN, SPD5118_TEMP_RANGE_MAX);
+	return (DIV_ROUND_CLOSEST(temp, SPD5118_TEMP_UNIT) & 0x7ff) << 2;
+}
+
+static int spd5118_read_temp(struct regmap *regmap, u32 attr, long *val)
+{
+	int reg, err;
+	u8 regval[2];
+	u16 temp;
+
+	switch (attr) {
+	case hwmon_temp_input:
+		reg = SPD5118_REG_TEMP;
+		break;
+	case hwmon_temp_max:
+		reg = SPD5118_REG_TEMP_MAX;
+		break;
+	case hwmon_temp_min:
+		reg = SPD5118_REG_TEMP_MIN;
+		break;
+	case hwmon_temp_crit:
+		reg = SPD5118_REG_TEMP_CRIT;
+		break;
+	case hwmon_temp_lcrit:
+		reg = SPD5118_REG_TEMP_LCRIT;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = regmap_bulk_read(regmap, reg, regval, 2);
+	if (err)
+		return err;
+
+	temp = (regval[1] << 8) | regval[0];
+
+	*val = spd5118_temp_from_reg(temp);
+	return 0;
+}
+
+static int spd5118_read_alarm(struct regmap *regmap, u32 attr, long *val)
+{
+	unsigned int mask, regval;
+	int err;
+
+	switch (attr) {
+	case hwmon_temp_max_alarm:
+		mask = SPD5118_TEMP_STATUS_HIGH;
+		break;
+	case hwmon_temp_min_alarm:
+		mask = SPD5118_TEMP_STATUS_LOW;
+		break;
+	case hwmon_temp_crit_alarm:
+		mask = SPD5118_TEMP_STATUS_CRIT;
+		break;
+	case hwmon_temp_lcrit_alarm:
+		mask = SPD5118_TEMP_STATUS_LCRIT;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = regmap_read(regmap, SPD5118_REG_TEMP_STATUS, &regval);
+	if (err < 0)
+		return err;
+	*val = !!(regval & mask);
+	if (*val)
+		return regmap_write(regmap, SPD5118_REG_TEMP_CLR, mask);
+	return 0;
+}
+
+static int spd5118_read_enable(struct regmap *regmap, long *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_read(regmap, SPD5118_REG_TEMP_CONFIG, &regval);
+	if (err < 0)
+		return err;
+	*val = !(regval & SPD5118_TS_DISABLE);
+	return 0;
+}
+
+static int spd5118_read(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long *val)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+
+	if (type != hwmon_temp)
+		return -EOPNOTSUPP;
+
+	switch (attr) {
+	case hwmon_temp_input:
+	case hwmon_temp_max:
+	case hwmon_temp_min:
+	case hwmon_temp_crit:
+	case hwmon_temp_lcrit:
+		return spd5118_read_temp(regmap, attr, val);
+	case hwmon_temp_max_alarm:
+	case hwmon_temp_min_alarm:
+	case hwmon_temp_crit_alarm:
+	case hwmon_temp_lcrit_alarm:
+		return spd5118_read_alarm(regmap, attr, val);
+	case hwmon_temp_enable:
+		return spd5118_read_enable(regmap, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int spd5118_write_temp(struct regmap *regmap, u32 attr, long val)
+{
+	u8 regval[2];
+	u16 temp;
+	int reg;
+
+	switch (attr) {
+	case hwmon_temp_max:
+		reg = SPD5118_REG_TEMP_MAX;
+		break;
+	case hwmon_temp_min:
+		reg = SPD5118_REG_TEMP_MIN;
+		break;
+	case hwmon_temp_crit:
+		reg = SPD5118_REG_TEMP_CRIT;
+		break;
+	case hwmon_temp_lcrit:
+		reg = SPD5118_REG_TEMP_LCRIT;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	temp = spd5118_temp_to_reg(val);
+	regval[0] = temp & 0xff;
+	regval[1] = temp >> 8;
+
+	return regmap_bulk_write(regmap, reg, regval, 2);
+}
+
+static int spd5118_write_enable(struct regmap *regmap, long val)
+{
+	if (val && val != 1)
+		return -EINVAL;
+
+	return regmap_update_bits(regmap, SPD5118_REG_TEMP_CONFIG,
+				  SPD5118_TS_DISABLE,
+				  val ? 0 : SPD5118_TS_DISABLE);
+}
+
+static int spd5118_temp_write(struct regmap *regmap, u32 attr, long val)
+{
+	switch (attr) {
+	case hwmon_temp_max:
+	case hwmon_temp_min:
+	case hwmon_temp_crit:
+	case hwmon_temp_lcrit:
+		return spd5118_write_temp(regmap, attr, val);
+	case hwmon_temp_enable:
+		return spd5118_write_enable(regmap, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int spd5118_write(struct device *dev, enum hwmon_sensor_types type,
+			 u32 attr, int channel, long val)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+
+	switch (type) {
+	case hwmon_temp:
+		return spd5118_temp_write(regmap, attr, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static umode_t spd5118_is_visible(const void *_data, enum hwmon_sensor_types type,
+				  u32 attr, int channel)
+{
+	if (type != hwmon_temp)
+		return 0;
+
+	switch (attr) {
+	case hwmon_temp_input:
+		return 0444;
+	case hwmon_temp_min:
+	case hwmon_temp_max:
+	case hwmon_temp_lcrit:
+	case hwmon_temp_crit:
+	case hwmon_temp_enable:
+		return 0644;
+	case hwmon_temp_min_alarm:
+	case hwmon_temp_max_alarm:
+	case hwmon_temp_crit_alarm:
+	case hwmon_temp_lcrit_alarm:
+		return 0444;
+	default:
+		return 0;
+	}
+}
+
+static inline bool spd5118_parity8(u8 w)
+{
+	w ^= w >> 4;
+	return (0x6996 >> (w & 0xf)) & 1;
+}
+
+/*
+ * Bank and vendor id are 8-bit fields with seven data bits and odd parity.
+ * Vendor IDs 0 and 0x7f are invalid.
+ * See Jedec standard JEP106BJ for details and a list of assigned vendor IDs.
+ */
+static bool spd5118_vendor_valid(u8 bank, u8 id)
+{
+	if (!spd5118_parity8(bank) || !spd5118_parity8(id))
+		return false;
+
+	id &= 0x7f;
+	return id && id != 0x7f;
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+	struct i2c_adapter *adapter = client->adapter;
+	int regval;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+				     I2C_FUNC_SMBUS_WORD_DATA))
+		return -ENODEV;
+
+	regval = i2c_smbus_read_word_swapped(client, SPD5118_REG_TYPE);
+	if (regval != 0x5118)
+		return -ENODEV;
+
+	regval = i2c_smbus_read_word_data(client, SPD5118_REG_VENDOR);
+	if (regval < 0 || !spd5118_vendor_valid(regval & 0xff, regval >> 8))
+		return -ENODEV;
+
+	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_CAPABILITY);
+	if (regval < 0)
+		return -ENODEV;
+	if (!(regval & SPD5118_CAP_TS_SUPPORT) || (regval & 0xfc))
+		return -ENODEV;
+
+	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_TEMP_CLR);
+	if (regval)
+		return -ENODEV;
+	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_ERROR_CLR);
+	if (regval)
+		return -ENODEV;
+
+	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_REVISION);
+	if (regval < 0 || (regval & 0xc1))
+		return -ENODEV;
+
+	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_TEMP_CONFIG);
+	if (regval < 0)
+		return -ENODEV;
+	if (regval & ~SPD5118_TS_DISABLE)
+		return -ENODEV;
+
+	strscpy(info->type, "spd5118", I2C_NAME_SIZE);
+	return 0;
+}
+
+static const struct hwmon_channel_info *spd5118_info[] = {
+	HWMON_CHANNEL_INFO(chip,
+			   HWMON_C_REGISTER_TZ),
+	HWMON_CHANNEL_INFO(temp,
+			   HWMON_T_INPUT |
+			   HWMON_T_LCRIT | HWMON_T_LCRIT_ALARM |
+			   HWMON_T_MIN | HWMON_T_MIN_ALARM |
+			   HWMON_T_MAX | HWMON_T_MAX_ALARM |
+			   HWMON_T_CRIT | HWMON_T_CRIT_ALARM |
+			   HWMON_T_ENABLE),
+	NULL
+};
+
+static const struct hwmon_ops spd5118_hwmon_ops = {
+	.is_visible = spd5118_is_visible,
+	.read = spd5118_read,
+	.write = spd5118_write,
+};
+
+static const struct hwmon_chip_info spd5118_chip_info = {
+	.ops = &spd5118_hwmon_ops,
+	.info = spd5118_info,
+};
+
+static bool spd5118_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case SPD5118_REG_TEMP_CLR:
+	case SPD5118_REG_TEMP_CONFIG:
+	case SPD5118_REG_TEMP_MAX:
+	case SPD5118_REG_TEMP_MAX + 1:
+	case SPD5118_REG_TEMP_MIN:
+	case SPD5118_REG_TEMP_MIN + 1:
+	case SPD5118_REG_TEMP_CRIT:
+	case SPD5118_REG_TEMP_CRIT + 1:
+	case SPD5118_REG_TEMP_LCRIT:
+	case SPD5118_REG_TEMP_LCRIT + 1:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool spd5118_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case SPD5118_REG_TEMP_CLR:
+	case SPD5118_REG_ERROR_CLR:
+	case SPD5118_REG_TEMP:
+	case SPD5118_REG_TEMP + 1:
+	case SPD5118_REG_TEMP_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config spd5118_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = SPD5118_REG_TEMP_STATUS,
+	.writeable_reg = spd5118_writeable_reg,
+	.volatile_reg = spd5118_volatile_reg,
+	.cache_type = REGCACHE_MAPLE,
+};
+
+static int spd5118_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	unsigned int regval, revision, vendor, bank;
+	struct device *hwmon_dev;
+	struct regmap *regmap;
+	int err;
+
+	regmap = devm_regmap_init_i2c(client, &spd5118_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap), "regmap init failed\n");
+
+	err = regmap_read(regmap, SPD5118_REG_CAPABILITY, &regval);
+	if (err)
+		return err;
+	if (!(regval & SPD5118_CAP_TS_SUPPORT))
+		return -ENODEV;
+
+	err = regmap_read(regmap, SPD5118_REG_REVISION, &revision);
+	if (err)
+		return err;
+
+	err = regmap_read(regmap, SPD5118_REG_VENDOR, &bank);
+	if (err)
+		return err;
+	err = regmap_read(regmap, SPD5118_REG_VENDOR + 1, &vendor);
+	if (err)
+		return err;
+	if (!spd5118_vendor_valid(bank, vendor))
+		return -ENODEV;
+
+	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
+							 regmap, &spd5118_chip_info,
+							 NULL);
+	if (IS_ERR(hwmon_dev))
+		return PTR_ERR(hwmon_dev);
+
+	/*
+	 * From JESD300-5B
+	 *   MR2 bits [5:4]: Major revision, 1..4
+	 *   MR2 bits [3:1]: Minor revision, 0..8? Probably a typo, assume 1..8
+	 */
+	dev_info(dev, "DDR5 temperature sensor: vendor 0x%02x:0x%02x revision %d.%d\n",
+		 bank & 0x7f, vendor, ((revision >> 4) & 0x03) + 1, ((revision >> 1) & 0x07) + 1);
+
+	return 0;
+}
+
+static const struct i2c_device_id spd5118_id[] = {
+	{ "spd5118", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, spd5118_id);
+
+static const struct of_device_id spd5118_of_ids[] = {
+	{ .compatible = "jedec,spd5118", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, spd5118_of_ids);
+
+static struct i2c_driver spd5118_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "spd5118",
+		.of_match_table = spd5118_of_ids,
+	},
+	.probe		= spd5118_probe,
+	.id_table	= spd5118_id,
+	.detect		= spd5118_detect,
+	.address_list	= normal_i2c,
+};
+
+module_i2c_driver(spd5118_driver);
+
+MODULE_AUTHOR("René Rebe <rene@exactcode.de>");
+MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
+MODULE_DESCRIPTION("SPD 5118 driver");
+MODULE_LICENSE("GPL");
-- 
2.39.2

[PATCH v4 3/6] hwmon: (spd5118) Add suspend/resume support

[Guenter Roeck]

Add suspend/resume support to ensure that limit and configuration
registers are updated and synchronized after a suspend/resume cycle.

Cc: Armin Wolf <W_Armin@gmx.de>
Cc: Stephen Horvath <s.horvath@outlook.com.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v4: Fix bug seen if the enable attribute was never read prior
    to a suspend/resume cycle.

v3: No change

v2: New patch

 drivers/hwmon/spd5118.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
index d3fc0ae17743..d55c073ff5fd 100644
--- a/drivers/hwmon/spd5118.c
+++ b/drivers/hwmon/spd5118.c
@@ -20,6 +20,7 @@
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
 #include <linux/module.h>
+#include <linux/pm.h>
 #include <linux/regmap.h>
 #include <linux/units.h>
 
@@ -432,6 +433,8 @@ static int spd5118_probe(struct i2c_client *client)
 	if (!spd5118_vendor_valid(bank, vendor))
 		return -ENODEV;
 
+	dev_set_drvdata(dev, regmap);
+
 	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
 							 regmap, &spd5118_chip_info,
 							 NULL);
@@ -449,6 +452,41 @@ static int spd5118_probe(struct i2c_client *client)
 	return 0;
 }
 
+static int spd5118_suspend(struct device *dev)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+	u32 regval;
+	int err;
+
+	/*
+	 * Make sure the configuration register in the regmap cache is current
+	 * before bypassing it.
+	 */
+	err = regmap_read(regmap, SPD5118_REG_TEMP_CONFIG, &regval);
+	if (err < 0)
+		return err;
+
+	regcache_cache_bypass(regmap, true);
+	regmap_update_bits(regmap, SPD5118_REG_TEMP_CONFIG, SPD5118_TS_DISABLE,
+			   SPD5118_TS_DISABLE);
+	regcache_cache_bypass(regmap, false);
+
+	regcache_cache_only(regmap, true);
+	regcache_mark_dirty(regmap);
+
+	return 0;
+}
+
+static int spd5118_resume(struct device *dev)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+
+	regcache_cache_only(regmap, false);
+	return regcache_sync(regmap);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(spd5118_pm_ops, spd5118_suspend, spd5118_resume);
+
 static const struct i2c_device_id spd5118_id[] = {
 	{ "spd5118", 0 },
 	{ }
@@ -466,6 +504,7 @@ static struct i2c_driver spd5118_driver = {
 	.driver = {
 		.name	= "spd5118",
 		.of_match_table = spd5118_of_ids,
+		.pm = pm_sleep_ptr(&spd5118_pm_ops),
 	},
 	.probe		= spd5118_probe,
 	.id_table	= spd5118_id,
-- 
2.39.2

[PATCH v4 4/6] hwmon: (spd5118) Add support for reading SPD data

[Guenter Roeck]

Add support for reading SPD NVMEM data from SPD5118 (Jedec JESD300)
compliant memory modules. NVMEM write operation is not supported.

NVMEM support is optional. If CONFIG_NVMEM is disabled, the driver will
still instantiate but not provide NVMEM attribute files.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v4: Use NVMEM_DEVID_NONE instead of NVMEM_DEVID_AUTO
    Ignore nvmem registration failure if nvmem support is disabled

v3: New patch

 Documentation/hwmon/spd5118.rst |   8 ++
 drivers/hwmon/spd5118.c         | 147 +++++++++++++++++++++++++++++++-
 2 files changed, 151 insertions(+), 4 deletions(-)

diff --git a/Documentation/hwmon/spd5118.rst b/Documentation/hwmon/spd5118.rst
index a15d75aa2066..ef7338f46575 100644
--- a/Documentation/hwmon/spd5118.rst
+++ b/Documentation/hwmon/spd5118.rst
@@ -53,3 +53,11 @@ temp1_crit_alarm	Temperature critical alarm
 
 Alarm attributes are sticky until read and will be cleared afterwards
 unless the alarm condition still applies.
+
+
+SPD (Serial Presence Detect) support
+------------------------------------
+
+The driver also supports reading the SPD NVRAM on SPD5118 compatible chips.
+SPD data is available from the 'eeprom' binary attribute file attached to the
+chip's I2C device.
diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
index d55c073ff5fd..5cb5e52c0a38 100644
--- a/drivers/hwmon/spd5118.c
+++ b/drivers/hwmon/spd5118.c
@@ -20,6 +20,8 @@
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/nvmem-provider.h>
 #include <linux/pm.h>
 #include <linux/regmap.h>
 #include <linux/units.h>
@@ -53,12 +55,31 @@ static const unsigned short normal_i2c[] = {
 
 #define SPD5118_TS_DISABLE		BIT(0)	/* temperature sensor disable */
 
+#define SPD5118_LEGACY_MODE_ADDR	BIT(3)
+#define SPD5118_LEGACY_PAGE_MASK	GENMASK(2, 0)
+#define SPD5118_LEGACY_MODE_MASK	(SPD5118_LEGACY_MODE_ADDR | SPD5118_LEGACY_PAGE_MASK)
+
+
+#define SPD5118_NUM_PAGES		8
+#define SPD5118_PAGE_SIZE		128
+#define SPD5118_PAGE_SHIFT		7
+#define SPD5118_PAGE_MASK		GENMASK(6, 0)
+#define SPD5118_EEPROM_BASE		0x80
+#define SPD5118_EEPROM_SIZE		(SPD5118_PAGE_SIZE * SPD5118_NUM_PAGES)
+
 /* Temperature unit in millicelsius */
 #define SPD5118_TEMP_UNIT		(MILLIDEGREE_PER_DEGREE / 4)
 /* Representable temperature range in millicelsius */
 #define SPD5118_TEMP_RANGE_MIN		-256000
 #define SPD5118_TEMP_RANGE_MAX		255750
 
+struct spd5118_data {
+	struct regmap *regmap;
+	struct mutex nvmem_lock;
+};
+
+/* hwmon */
+
 static int spd5118_temp_from_reg(u16 reg)
 {
 	int temp = sign_extend32(reg >> 2, 10);
@@ -360,9 +381,111 @@ static const struct hwmon_chip_info spd5118_chip_info = {
 	.info = spd5118_info,
 };
 
+/* nvmem */
+
+static int spd5118_nvmem_set_page(struct regmap *regmap, int page)
+{
+	unsigned int old_page;
+	int err;
+
+	err = regmap_read(regmap, SPD5118_REG_I2C_LEGACY_MODE, &old_page);
+	if (err)
+		return err;
+
+	if (page != (old_page & SPD5118_LEGACY_MODE_MASK)) {
+		/* Update page and explicitly select 1-byte addressing */
+		err = regmap_update_bits(regmap, SPD5118_REG_I2C_LEGACY_MODE,
+					 SPD5118_LEGACY_MODE_MASK, page);
+		if (err)
+			return err;
+
+		/* Selected new NVMEM page, drop cached data */
+		regcache_drop_region(regmap, SPD5118_EEPROM_BASE, 0xff);
+	}
+
+	return 0;
+}
+
+static ssize_t spd5118_nvmem_read_page(struct regmap *regmap, char *buf,
+				       unsigned int offset, size_t count)
+{
+	int err;
+
+	err = spd5118_nvmem_set_page(regmap, offset >> SPD5118_PAGE_SHIFT);
+	if (err)
+		return err;
+
+	offset &= SPD5118_PAGE_MASK;
+
+	/* Can't cross page boundaries */
+	if (offset + count > SPD5118_PAGE_SIZE)
+		count = SPD5118_PAGE_SIZE - offset;
+
+	err = regmap_bulk_read(regmap, SPD5118_EEPROM_BASE + offset, buf, count);
+	if (err)
+		return err;
+
+	return count;
+}
+
+static int spd5118_nvmem_read(void *priv, unsigned int off, void *val, size_t count)
+{
+	struct spd5118_data *data = priv;
+	char *buf = val;
+	int ret;
+
+	if (unlikely(!count))
+		return count;
+
+	if (off + count > SPD5118_EEPROM_SIZE)
+		return -EINVAL;
+
+	mutex_lock(&data->nvmem_lock);
+
+	while (count) {
+		ret = spd5118_nvmem_read_page(data->regmap, buf, off, count);
+		if (ret < 0) {
+			mutex_unlock(&data->nvmem_lock);
+			return ret;
+		}
+		buf += ret;
+		off += ret;
+		count -= ret;
+	}
+	mutex_unlock(&data->nvmem_lock);
+	return 0;
+}
+
+static int spd5118_nvmem_init(struct device *dev, struct spd5118_data *data)
+{
+	struct nvmem_config nvmem_config = {
+		.type = NVMEM_TYPE_EEPROM,
+		.name = dev_name(dev),
+		.id = NVMEM_DEVID_NONE,
+		.dev = dev,
+		.base_dev = dev,
+		.read_only = true,
+		.root_only = false,
+		.owner = THIS_MODULE,
+		.compat = true,
+		.reg_read = spd5118_nvmem_read,
+		.priv = data,
+		.stride = 1,
+		.word_size = 1,
+		.size = SPD5118_EEPROM_SIZE,
+	};
+	struct nvmem_device *nvmem;
+
+	nvmem = devm_nvmem_register(dev, &nvmem_config);
+	return PTR_ERR_OR_ZERO(nvmem);
+}
+
+/* regmap */
+
 static bool spd5118_writeable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
+	case SPD5118_REG_I2C_LEGACY_MODE:
 	case SPD5118_REG_TEMP_CLR:
 	case SPD5118_REG_TEMP_CONFIG:
 	case SPD5118_REG_TEMP_MAX:
@@ -396,7 +519,7 @@ static bool spd5118_volatile_reg(struct device *dev, unsigned int reg)
 static const struct regmap_config spd5118_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.max_register = SPD5118_REG_TEMP_STATUS,
+	.max_register = 0xff,
 	.writeable_reg = spd5118_writeable_reg,
 	.volatile_reg = spd5118_volatile_reg,
 	.cache_type = REGCACHE_MAPLE,
@@ -406,10 +529,15 @@ static int spd5118_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	unsigned int regval, revision, vendor, bank;
+	struct spd5118_data *data;
 	struct device *hwmon_dev;
 	struct regmap *regmap;
 	int err;
 
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
 	regmap = devm_regmap_init_i2c(client, &spd5118_regmap_config);
 	if (IS_ERR(regmap))
 		return dev_err_probe(dev, PTR_ERR(regmap), "regmap init failed\n");
@@ -433,7 +561,16 @@ static int spd5118_probe(struct i2c_client *client)
 	if (!spd5118_vendor_valid(bank, vendor))
 		return -ENODEV;
 
-	dev_set_drvdata(dev, regmap);
+	data->regmap = regmap;
+	mutex_init(&data->nvmem_lock);
+	dev_set_drvdata(dev, data);
+
+	err = spd5118_nvmem_init(dev, data);
+	/* Ignore if NVMEM support is disabled */
+	if (err && err != -EOPNOTSUPP) {
+		dev_err_probe(dev, err, "failed to register nvmem\n");
+		return err;
+	}
 
 	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
 							 regmap, &spd5118_chip_info,
@@ -454,7 +591,8 @@ static int spd5118_probe(struct i2c_client *client)
 
 static int spd5118_suspend(struct device *dev)
 {
-	struct regmap *regmap = dev_get_drvdata(dev);
+	struct spd5118_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
 	u32 regval;
 	int err;
 
@@ -479,7 +617,8 @@ static int spd5118_suspend(struct device *dev)
 
 static int spd5118_resume(struct device *dev)
 {
-	struct regmap *regmap = dev_get_drvdata(dev);
+	struct spd5118_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
 
 	regcache_cache_only(regmap, false);
 	return regcache_sync(regmap);
-- 
2.39.2

[PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

Detect DDR5 memory and instantiate the SPD5118 driver automatically.

Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v5: New patch

 drivers/i2c/i2c-smbus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index 97f338b123b1..8a0dab835761 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap)
 	case 0x1E:	/* LPDDR4 */
 		name = "ee1004";
 		break;
+	case 0x22:	/* DDR5 */
+	case 0x23:	/* LPDDR5 */
+		name = "spd5118";
+		break;
 	default:
 		dev_info(&adap->dev,
 			 "Memory type 0x%02x not supported yet, not instantiating SPD\n",
-- 
2.39.2

[PATCH v4 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Guenter Roeck]

With SPD5118 chip detection for the most part handled by the i2c-smbus
core using DMI information, the spd5118 driver no longer needs to
auto-detect spd5118 compliant chips.

Auto-detection by the driver is still needed on systems with no DMI support
or on systems with more than eight DIMMs and can not be removed entirely.
However, it affects boot time and introduces the risk of mis-identifying
chips. Add configuration option to be able to disable it on systems where
chip detection is handled outside the driver.

Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v4: New patch

 drivers/hwmon/Kconfig   | 18 ++++++++++++++++++
 drivers/hwmon/spd5118.c |  4 +++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 7a84e7637b51..0bb1bdee3e43 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2185,6 +2185,7 @@ config SENSORS_SPD5118
 	tristate "SPD5118 Compliant Temperature Sensors"
 	depends on I2C
 	select REGMAP_I2C
+	select SENSORS_SPD5118_DETECT if !DMI
 	help
 	  If you say yes here you get support for SPD5118 (JEDEC JESD300)
 	  compliant temperature sensors. Such sensors are found on DDR5 memory
@@ -2193,6 +2194,23 @@ config SENSORS_SPD5118
 	  This driver can also be built as a module. If so, the module
 	  will be called spd5118.
 
+config SENSORS_SPD5118_DETECT
+	bool "Enable detect function"
+	depends on SENSORS_SPD5118
+	default y
+	help
+	  If enabled, the driver auto-detects if a chip in the SPD address
+	  range is compliant to the SPD51888 standard and auto-instantiates
+	  if that is the case. If disabled, SPD5118 compliant devices have
+	  to be instantiated by other means. On systems with DMI support
+	  this will typically be done from DMI DDR detection code in the
+	  I2C SMBus subsystem.
+	  Disabling the detect function will speed up boot time and reduce
+	  the risk of mis-detecting SPD5118 compliant devices. In general
+	  it should only be enabled if necessary.
+
+	  If unsure, say Y.
+
 config SENSORS_TC74
 	tristate "Microchip TC74"
 	depends on I2C
diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
index 5cb5e52c0a38..19d203283a21 100644
--- a/drivers/hwmon/spd5118.c
+++ b/drivers/hwmon/spd5118.c
@@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
 }
 
 /* Return 0 if detection is successful, -ENODEV otherwise */
-static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
+static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
 {
 	struct i2c_adapter *adapter = client->adapter;
 	int regval;
@@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
 	},
 	.probe		= spd5118_probe,
 	.id_table	= spd5118_id,
+#ifdef CONFIG_SENSORS_SPD5118_DETECT
 	.detect		= spd5118_detect,
+#endif
 	.address_list	= normal_i2c,
 };
 
-- 
2.39.2

Re: [PATCH v4 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Thomas Weißschuh]

On 2024-06-03 21:02:37+0000, Guenter Roeck wrote:
> With SPD5118 chip detection for the most part handled by the i2c-smbus
> core using DMI information, the spd5118 driver no longer needs to
> auto-detect spd5118 compliant chips.
> 
> Auto-detection by the driver is still needed on systems with no DMI support
> or on systems with more than eight DIMMs and can not be removed entirely.
> However, it affects boot time and introduces the risk of mis-identifying
> chips. Add configuration option to be able to disable it on systems where
> chip detection is handled outside the driver.
> 
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: New patch
> 
>  drivers/hwmon/Kconfig   | 18 ++++++++++++++++++
>  drivers/hwmon/spd5118.c |  4 +++-
>  2 files changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index 7a84e7637b51..0bb1bdee3e43 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -2185,6 +2185,7 @@ config SENSORS_SPD5118
>  	tristate "SPD5118 Compliant Temperature Sensors"
>  	depends on I2C
>  	select REGMAP_I2C
> +	select SENSORS_SPD5118_DETECT if !DMI
>  	help
>  	  If you say yes here you get support for SPD5118 (JEDEC JESD300)
>  	  compliant temperature sensors. Such sensors are found on DDR5 memory
> @@ -2193,6 +2194,23 @@ config SENSORS_SPD5118
>  	  This driver can also be built as a module. If so, the module
>  	  will be called spd5118.
>  
> +config SENSORS_SPD5118_DETECT
> +	bool "Enable detect function"
> +	depends on SENSORS_SPD5118
> +	default y
> +	help
> +	  If enabled, the driver auto-detects if a chip in the SPD address
> +	  range is compliant to the SPD51888 standard and auto-instantiates
> +	  if that is the case. If disabled, SPD5118 compliant devices have
> +	  to be instantiated by other means. On systems with DMI support
> +	  this will typically be done from DMI DDR detection code in the
> +	  I2C SMBus subsystem.
> +	  Disabling the detect function will speed up boot time and reduce
> +	  the risk of mis-detecting SPD5118 compliant devices. In general
> +	  it should only be enabled if necessary.
> +
> +	  If unsure, say Y.

The combination of

"In general it should only be enabled if necessary."

and

"default y" / "If unsure, say Y."

looks weird.


Also right now it is not possible to disable detection on non-DMI
configurations. But when using OF, custom kernel code or userspace
instantiation then neither DMI nor CONFIG_DETECT are necessary.

The following would support those usecases, too:

config SENSORS_SPD5118_DETECT
	bool "Enable detect function"
	depends on SENSORS_SPD5118
	default !DMI

(And no "select SENSORS_SPD5118_DETECT if !DMI")

> +
>  config SENSORS_TC74
>  	tristate "Microchip TC74"
>  	depends on I2C
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> index 5cb5e52c0a38..19d203283a21 100644
> --- a/drivers/hwmon/spd5118.c
> +++ b/drivers/hwmon/spd5118.c
> @@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
>  }
>  
>  /* Return 0 if detection is successful, -ENODEV otherwise */
> -static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
> +static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
>  {
>  	struct i2c_adapter *adapter = client->adapter;
>  	int regval;
> @@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
>  	},
>  	.probe		= spd5118_probe,
>  	.id_table	= spd5118_id,
> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>  	.detect		= spd5118_detect,
> +#endif
>  	.address_list	= normal_i2c,

.address_list is also only needed with CONFIG_SENSORS_SPD5118_DETECT.


If you use

.detect         = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  spd5118_detect : NULL,
.address_list   = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  normal_i2c : NULL,

then the need for __maybe_unused goes away and type checking is a tiny
bit better.

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 369 bytes --]

On Mon, Jun 03, 2024 at 09:02:36PM -0700, Guenter Roeck wrote:
> Detect DDR5 memory and instantiate the SPD5118 driver automatically.
> 
> Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>


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Re: [PATCH v4 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 203 bytes --]

> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>  	.detect		= spd5118_detect,
> +#endif
>  	.address_list	= normal_i2c,
>  };

So, I think we have too many Kconfig symbols already. What about using
!DMI here?


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Re: [PATCH v4 3/6] hwmon: (spd5118) Add suspend/resume support

[Stephen Horvath]

Hi,

On 4/6/24 14:02, Guenter Roeck wrote:
> Add suspend/resume support to ensure that limit and configuration
> registers are updated and synchronized after a suspend/resume cycle.
> 
> Cc: Armin Wolf <W_Armin@gmx.de>
> Cc: Stephen Horvath <s.horvath@outlook.com.au>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: Fix bug seen if the enable attribute was never read prior
>      to a suspend/resume cycle.

I can confirm this works for my devices, so:

Tested-by: Stephen Horvath <s.horvath@outlook.com.au>

Thanks,
Steve

Re: [PATCH v4 2/6] hwmon: Add support for SPD5118 compliant temperature sensors

[Stephen Horvath]

Hi,

On 4/6/24 14:02, Guenter Roeck wrote:
> Add support for SPD5118 (Jedec JESD300) compliant temperature
> sensors. Such sensors are typically found on DDR5 memory modules.
> 
> Cc: René Rebe <rene@exactcode.de>
> Cc: Thomas Weißschuh <linux@weissschuh.net>
> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
> Tested-by: Thomas Weißschuh <linux@weissschuh.net>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: No change
> 
> v3: Shorten JESD300-5B.01 to JESD300; 5B.01 refers to the version
>      of the standard
>      Drop unnecessary 'attr' parameter from spd5118_{read,write}_enable()
> 
> v2: Drop PEC property documentation
>      Add note indicating that alarm attributes are sticky until read
>      to documentation
>      Fix detect function
>      Fix misspelling in Makefile (CONFIG_SENSORS_SPD5118->CONFIG_SENSORS_SPD5118)
> 
>   Documentation/hwmon/index.rst   |   1 +
>   Documentation/hwmon/spd5118.rst |  55 ++++
>   drivers/hwmon/Kconfig           |  12 +
>   drivers/hwmon/Makefile          |   1 +
>   drivers/hwmon/spd5118.c         | 481 ++++++++++++++++++++++++++++++++
>   5 files changed, 550 insertions(+)
>   create mode 100644 Documentation/hwmon/spd5118.rst
>   create mode 100644 drivers/hwmon/spd5118.c
> 

It seems to report correct temperatures for my sticks, so I guess:

Tested-by: Stephen Horvath <s.horvath@outlook.com.au>

Thanks,
Steve

Re: [PATCH v4 4/6] hwmon: (spd5118) Add support for reading SPD data

[Armin Wolf]

Am 04.06.24 um 06:02 schrieb Guenter Roeck:

> Add support for reading SPD NVMEM data from SPD5118 (Jedec JESD300)
> compliant memory modules. NVMEM write operation is not supported.
>
> NVMEM support is optional. If CONFIG_NVMEM is disabled, the driver will
> still instantiate but not provide NVMEM attribute files.
>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: Use NVMEM_DEVID_NONE instead of NVMEM_DEVID_AUTO
>      Ignore nvmem registration failure if nvmem support is disabled
>
> v3: New patch
>
>   Documentation/hwmon/spd5118.rst |   8 ++
>   drivers/hwmon/spd5118.c         | 147 +++++++++++++++++++++++++++++++-
>   2 files changed, 151 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/hwmon/spd5118.rst b/Documentation/hwmon/spd5118.rst
> index a15d75aa2066..ef7338f46575 100644
> --- a/Documentation/hwmon/spd5118.rst
> +++ b/Documentation/hwmon/spd5118.rst
> @@ -53,3 +53,11 @@ temp1_crit_alarm	Temperature critical alarm
>
>   Alarm attributes are sticky until read and will be cleared afterwards
>   unless the alarm condition still applies.
> +
> +
> +SPD (Serial Presence Detect) support
> +------------------------------------
> +
> +The driver also supports reading the SPD NVRAM on SPD5118 compatible chips.
> +SPD data is available from the 'eeprom' binary attribute file attached to the
> +chip's I2C device.
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> index d55c073ff5fd..5cb5e52c0a38 100644
> --- a/drivers/hwmon/spd5118.c
> +++ b/drivers/hwmon/spd5118.c
> @@ -20,6 +20,8 @@
>   #include <linux/i2c.h>
>   #include <linux/hwmon.h>
>   #include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/nvmem-provider.h>
>   #include <linux/pm.h>
>   #include <linux/regmap.h>
>   #include <linux/units.h>
> @@ -53,12 +55,31 @@ static const unsigned short normal_i2c[] = {
>
>   #define SPD5118_TS_DISABLE		BIT(0)	/* temperature sensor disable */
>
> +#define SPD5118_LEGACY_MODE_ADDR	BIT(3)
> +#define SPD5118_LEGACY_PAGE_MASK	GENMASK(2, 0)
> +#define SPD5118_LEGACY_MODE_MASK	(SPD5118_LEGACY_MODE_ADDR | SPD5118_LEGACY_PAGE_MASK)
> +
> +
> +#define SPD5118_NUM_PAGES		8
> +#define SPD5118_PAGE_SIZE		128
> +#define SPD5118_PAGE_SHIFT		7
> +#define SPD5118_PAGE_MASK		GENMASK(6, 0)
> +#define SPD5118_EEPROM_BASE		0x80
> +#define SPD5118_EEPROM_SIZE		(SPD5118_PAGE_SIZE * SPD5118_NUM_PAGES)
> +
>   /* Temperature unit in millicelsius */
>   #define SPD5118_TEMP_UNIT		(MILLIDEGREE_PER_DEGREE / 4)
>   /* Representable temperature range in millicelsius */
>   #define SPD5118_TEMP_RANGE_MIN		-256000
>   #define SPD5118_TEMP_RANGE_MAX		255750
>
> +struct spd5118_data {
> +	struct regmap *regmap;
> +	struct mutex nvmem_lock;
> +};
> +
> +/* hwmon */
> +
>   static int spd5118_temp_from_reg(u16 reg)
>   {
>   	int temp = sign_extend32(reg >> 2, 10);
> @@ -360,9 +381,111 @@ static const struct hwmon_chip_info spd5118_chip_info = {
>   	.info = spd5118_info,
>   };
>
> +/* nvmem */
> +
> +static int spd5118_nvmem_set_page(struct regmap *regmap, int page)
> +{
> +	unsigned int old_page;
> +	int err;
> +
> +	err = regmap_read(regmap, SPD5118_REG_I2C_LEGACY_MODE, &old_page);
> +	if (err)
> +		return err;
> +
> +	if (page != (old_page & SPD5118_LEGACY_MODE_MASK)) {
> +		/* Update page and explicitly select 1-byte addressing */
> +		err = regmap_update_bits(regmap, SPD5118_REG_I2C_LEGACY_MODE,
> +					 SPD5118_LEGACY_MODE_MASK, page);
> +		if (err)
> +			return err;
> +
> +		/* Selected new NVMEM page, drop cached data */
> +		regcache_drop_region(regmap, SPD5118_EEPROM_BASE, 0xff);
> +	}
> +
> +	return 0;
> +}
> +
> +static ssize_t spd5118_nvmem_read_page(struct regmap *regmap, char *buf,
> +				       unsigned int offset, size_t count)
> +{
> +	int err;
> +
> +	err = spd5118_nvmem_set_page(regmap, offset >> SPD5118_PAGE_SHIFT);
> +	if (err)
> +		return err;
> +
> +	offset &= SPD5118_PAGE_MASK;
> +
> +	/* Can't cross page boundaries */
> +	if (offset + count > SPD5118_PAGE_SIZE)
> +		count = SPD5118_PAGE_SIZE - offset;
> +
> +	err = regmap_bulk_read(regmap, SPD5118_EEPROM_BASE + offset, buf, count);
> +	if (err)
> +		return err;
> +
> +	return count;
> +}
> +
> +static int spd5118_nvmem_read(void *priv, unsigned int off, void *val, size_t count)
> +{
> +	struct spd5118_data *data = priv;
> +	char *buf = val;
> +	int ret;
> +
> +	if (unlikely(!count))
> +		return count;
> +
> +	if (off + count > SPD5118_EEPROM_SIZE)
> +		return -EINVAL;
> +
> +	mutex_lock(&data->nvmem_lock);
> +
> +	while (count) {
> +		ret = spd5118_nvmem_read_page(data->regmap, buf, off, count);
> +		if (ret < 0) {
> +			mutex_unlock(&data->nvmem_lock);
> +			return ret;
> +		}
> +		buf += ret;
> +		off += ret;
> +		count -= ret;
> +	}
> +	mutex_unlock(&data->nvmem_lock);
> +	return 0;
> +}
> +
> +static int spd5118_nvmem_init(struct device *dev, struct spd5118_data *data)
> +{
> +	struct nvmem_config nvmem_config = {
> +		.type = NVMEM_TYPE_EEPROM,
> +		.name = dev_name(dev),
> +		.id = NVMEM_DEVID_NONE,
> +		.dev = dev,
> +		.base_dev = dev,
> +		.read_only = true,
> +		.root_only = false,
> +		.owner = THIS_MODULE,
> +		.compat = true,

Hi,

do we really need this setting here?

> +		.reg_read = spd5118_nvmem_read,
> +		.priv = data,
> +		.stride = 1,
> +		.word_size = 1,
> +		.size = SPD5118_EEPROM_SIZE,
> +	};
> +	struct nvmem_device *nvmem;
> +
> +	nvmem = devm_nvmem_register(dev, &nvmem_config);
> +	return PTR_ERR_OR_ZERO(nvmem);
> +}
> +
> +/* regmap */
> +
>   static bool spd5118_writeable_reg(struct device *dev, unsigned int reg)
>   {
>   	switch (reg) {
> +	case SPD5118_REG_I2C_LEGACY_MODE:
>   	case SPD5118_REG_TEMP_CLR:
>   	case SPD5118_REG_TEMP_CONFIG:
>   	case SPD5118_REG_TEMP_MAX:
> @@ -396,7 +519,7 @@ static bool spd5118_volatile_reg(struct device *dev, unsigned int reg)
>   static const struct regmap_config spd5118_regmap_config = {
>   	.reg_bits = 8,
>   	.val_bits = 8,
> -	.max_register = SPD5118_REG_TEMP_STATUS,
> +	.max_register = 0xff,
>   	.writeable_reg = spd5118_writeable_reg,
>   	.volatile_reg = spd5118_volatile_reg,
>   	.cache_type = REGCACHE_MAPLE,
> @@ -406,10 +529,15 @@ static int spd5118_probe(struct i2c_client *client)
>   {
>   	struct device *dev = &client->dev;
>   	unsigned int regval, revision, vendor, bank;
> +	struct spd5118_data *data;
>   	struct device *hwmon_dev;
>   	struct regmap *regmap;
>   	int err;
>
> +	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
>   	regmap = devm_regmap_init_i2c(client, &spd5118_regmap_config);
>   	if (IS_ERR(regmap))
>   		return dev_err_probe(dev, PTR_ERR(regmap), "regmap init failed\n");
> @@ -433,7 +561,16 @@ static int spd5118_probe(struct i2c_client *client)
>   	if (!spd5118_vendor_valid(bank, vendor))
>   		return -ENODEV;
>
> -	dev_set_drvdata(dev, regmap);
> +	data->regmap = regmap;
> +	mutex_init(&data->nvmem_lock);
> +	dev_set_drvdata(dev, data);
> +
> +	err = spd5118_nvmem_init(dev, data);
> +	/* Ignore if NVMEM support is disabled */
> +	if (err && err != -EOPNOTSUPP) {

Maybe we can use IS_REACHABLE(CONFIG_NVMEM) here?

Thanks,
Armin Wolf

> +		dev_err_probe(dev, err, "failed to register nvmem\n");
> +		return err;
> +	}
>
>   	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
>   							 regmap, &spd5118_chip_info,
> @@ -454,7 +591,8 @@ static int spd5118_probe(struct i2c_client *client)
>
>   static int spd5118_suspend(struct device *dev)
>   {
> -	struct regmap *regmap = dev_get_drvdata(dev);
> +	struct spd5118_data *data = dev_get_drvdata(dev);
> +	struct regmap *regmap = data->regmap;
>   	u32 regval;
>   	int err;
>
> @@ -479,7 +617,8 @@ static int spd5118_suspend(struct device *dev)
>
>   static int spd5118_resume(struct device *dev)
>   {
> -	struct regmap *regmap = dev_get_drvdata(dev);
> +	struct spd5118_data *data = dev_get_drvdata(dev);
> +	struct regmap *regmap = data->regmap;
>
>   	regcache_cache_only(regmap, false);
>   	return regcache_sync(regmap);

Re: [PATCH v4 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Guenter Roeck]

On 6/3/24 21:37, Thomas Weißschuh wrote:
> On 2024-06-03 21:02:37+0000, Guenter Roeck wrote:
>> With SPD5118 chip detection for the most part handled by the i2c-smbus
>> core using DMI information, the spd5118 driver no longer needs to
>> auto-detect spd5118 compliant chips.
>>
>> Auto-detection by the driver is still needed on systems with no DMI support
>> or on systems with more than eight DIMMs and can not be removed entirely.
>> However, it affects boot time and introduces the risk of mis-identifying
>> chips. Add configuration option to be able to disable it on systems where
>> chip detection is handled outside the driver.
>>
>> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> v4: New patch
>>
>>   drivers/hwmon/Kconfig   | 18 ++++++++++++++++++
>>   drivers/hwmon/spd5118.c |  4 +++-
>>   2 files changed, 21 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
>> index 7a84e7637b51..0bb1bdee3e43 100644
>> --- a/drivers/hwmon/Kconfig
>> +++ b/drivers/hwmon/Kconfig
>> @@ -2185,6 +2185,7 @@ config SENSORS_SPD5118
>>   	tristate "SPD5118 Compliant Temperature Sensors"
>>   	depends on I2C
>>   	select REGMAP_I2C
>> +	select SENSORS_SPD5118_DETECT if !DMI
>>   	help
>>   	  If you say yes here you get support for SPD5118 (JEDEC JESD300)
>>   	  compliant temperature sensors. Such sensors are found on DDR5 memory
>> @@ -2193,6 +2194,23 @@ config SENSORS_SPD5118
>>   	  This driver can also be built as a module. If so, the module
>>   	  will be called spd5118.
>>   
>> +config SENSORS_SPD5118_DETECT
>> +	bool "Enable detect function"
>> +	depends on SENSORS_SPD5118
>> +	default y
>> +	help
>> +	  If enabled, the driver auto-detects if a chip in the SPD address
>> +	  range is compliant to the SPD51888 standard and auto-instantiates
>> +	  if that is the case. If disabled, SPD5118 compliant devices have
>> +	  to be instantiated by other means. On systems with DMI support
>> +	  this will typically be done from DMI DDR detection code in the
>> +	  I2C SMBus subsystem.
>> +	  Disabling the detect function will speed up boot time and reduce
>> +	  the risk of mis-detecting SPD5118 compliant devices. In general
>> +	  it should only be enabled if necessary.
>> +
>> +	  If unsure, say Y.
> 
> The combination of
> 
> "In general it should only be enabled if necessary."
> 
> and
> 
> "default y" / "If unsure, say Y."
> 
> looks weird.
> 

Yes, I know. I just couldn't find a better wording.

> 
> Also right now it is not possible to disable detection on non-DMI
> configurations. But when using OF, custom kernel code or userspace
> instantiation then neither DMI nor CONFIG_DETECT are necessary.
> 

That is a good point.

> The following would support those usecases, too:
> 
> config SENSORS_SPD5118_DETECT
> 	bool "Enable detect function"
> 	depends on SENSORS_SPD5118
> 	default !DMI
> 
> (And no "select SENSORS_SPD5118_DETECT if !DMI")
> 

I don't think "default !DMI" would be a good idea because DMI
is supported by multiple architectures, but only two X86 specific
controllers call i2c_register_spd().

"default !DMI || !X86" might work, though. I think I'll use that.

I'll rephrase the text and drop the "select".

Thanks,
Guenter

Re: [PATCH v4 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Guenter Roeck]

On 6/4/24 00:44, Wolfram Sang wrote:
>> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>>   	.detect		= spd5118_detect,
>> +#endif
>>   	.address_list	= normal_i2c,
>>   };
> 
> So, I think we have too many Kconfig symbols already. What about using
> !DMI here?
> 

That would be nice, but i2c_register_spd() is only called from i2c-i801.c
and, with the recent patch, from i2c-piix4.c. DMI is also supported on
arm, arm64, loongarch, and mips. i2c_register_spd() will not be called
on those systems or, more generally, if the adapter used to connect to
the DIMMs is not one of those two.

On top of that, it may be desirable to disable it for a system with DMI
support if that system boots from devicetree. I don't know if such a
system exists, but I would not want to bet that it doesn't.

Thanks,
Guenter

Re: [PATCH v4 4/6] hwmon: (spd5118) Add support for reading SPD data

[Guenter Roeck]

On 6/4/24 04:58, Armin Wolf wrote:
> Am 04.06.24 um 06:02 schrieb Guenter Roeck:
> 
>> Add support for reading SPD NVMEM data from SPD5118 (Jedec JESD300)
>> compliant memory modules. NVMEM write operation is not supported.
>>
>> NVMEM support is optional. If CONFIG_NVMEM is disabled, the driver will
>> still instantiate but not provide NVMEM attribute files.
>>
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> v4: Use NVMEM_DEVID_NONE instead of NVMEM_DEVID_AUTO
>>      Ignore nvmem registration failure if nvmem support is disabled
>>
>> v3: New patch
>>
>>   Documentation/hwmon/spd5118.rst |   8 ++
>>   drivers/hwmon/spd5118.c         | 147 +++++++++++++++++++++++++++++++-


[ ... ]

>> +static int spd5118_nvmem_init(struct device *dev, struct spd5118_data *data)
>> +{
>> +    struct nvmem_config nvmem_config = {
>> +        .type = NVMEM_TYPE_EEPROM,
>> +        .name = dev_name(dev),
>> +        .id = NVMEM_DEVID_NONE,
>> +        .dev = dev,
>> +        .base_dev = dev,
>> +        .read_only = true,
>> +        .root_only = false,
>> +        .owner = THIS_MODULE,
>> +        .compat = true,
> 
> Hi,
> 
> do we really need this setting here?
> 

The "eeprom" file is only created if both "base_dev" and "compat" are set.
decode-dimms depends on it. While decode-dimms has to be updated anyway,
I did not want to make that more complicated than necessary.

Another option would be not to use the nvmem subsystem in the first place,
similar to the ee1004 driver, but my understanding is that the use of the
nvmem subsystem is preferred.

[ ... ]

>> +
>> +    err = spd5118_nvmem_init(dev, data);
>> +    /* Ignore if NVMEM support is disabled */
>> +    if (err && err != -EOPNOTSUPP) {
> 
> Maybe we can use IS_REACHABLE(CONFIG_NVMEM) here?
> 

We could, but I prefer to avoid conditionals in the code if possible,
the dummy devm_nvmem_register() is there specifically to cover that
situation, and no other driver does that. Also, since the underlying
functions are dummy, the compiler should optimize it all away if
CONFIG_NVMEM=n.

Thanks,
Guenter

Re: [PATCH v4 3/6] hwmon: (spd5118) Add suspend/resume support

[Guenter Roeck]

On 6/4/24 01:45, Stephen Horvath wrote:
> Hi,
> 
> On 4/6/24 14:02, Guenter Roeck wrote:
>> Add suspend/resume support to ensure that limit and configuration
>> registers are updated and synchronized after a suspend/resume cycle.
>>
>> Cc: Armin Wolf <W_Armin@gmx.de>
>> Cc: Stephen Horvath <s.horvath@outlook.com.au>
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> v4: Fix bug seen if the enable attribute was never read prior
>>      to a suspend/resume cycle.
> 
> I can confirm this works for my devices, so:
> 
> Tested-by: Stephen Horvath <s.horvath@outlook.com.au>
> 

Thanks a lot for testing!

Guenter

Re: [PATCH v4 2/6] hwmon: Add support for SPD5118 compliant temperature sensors

[Guenter Roeck]

On 6/4/24 01:48, Stephen Horvath wrote:
> Hi,
> 
> On 4/6/24 14:02, Guenter Roeck wrote:
>> Add support for SPD5118 (Jedec JESD300) compliant temperature
>> sensors. Such sensors are typically found on DDR5 memory modules.
>>
>> Cc: René Rebe <rene@exactcode.de>
>> Cc: Thomas Weißschuh <linux@weissschuh.net>
>> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
>> Tested-by: Thomas Weißschuh <linux@weissschuh.net>
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> v4: No change
>>
>> v3: Shorten JESD300-5B.01 to JESD300; 5B.01 refers to the version
>>      of the standard
>>      Drop unnecessary 'attr' parameter from spd5118_{read,write}_enable()
>>
>> v2: Drop PEC property documentation
>>      Add note indicating that alarm attributes are sticky until read
>>      to documentation
>>      Fix detect function
>>      Fix misspelling in Makefile (CONFIG_SENSORS_SPD5118->CONFIG_SENSORS_SPD5118)
>>
>>   Documentation/hwmon/index.rst   |   1 +
>>   Documentation/hwmon/spd5118.rst |  55 ++++
>>   drivers/hwmon/Kconfig           |  12 +
>>   drivers/hwmon/Makefile          |   1 +
>>   drivers/hwmon/spd5118.c         | 481 ++++++++++++++++++++++++++++++++
>>   5 files changed, 550 insertions(+)
>>   create mode 100644 Documentation/hwmon/spd5118.rst
>>   create mode 100644 drivers/hwmon/spd5118.c
>>
> 
> It seems to report correct temperatures for my sticks, so I guess:
> 
> Tested-by: Stephen Horvath <s.horvath@outlook.com.au>
> 

Thanks!

Guenter

[PATCH v4a 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Guenter Roeck]

With SPD5118 chip detection for the most part handled by the i2c-smbus
core using DMI information, the spd5118 driver no longer needs to
auto-detect spd5118 compliant chips.

Auto-detection by the driver is still needed on systems with no DMI support
or on systems with more than eight DIMMs and can not be removed entirely.
However, it affects boot time and introduces the risk of mis-identifying
chips. Add configuration option to be able to disable it on systems where
chip detection is handled outside the driver.

Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
Sent as v4a to avoid resending the entire series.

v4a:
    Do not auto-select SENSORS_SPD5118_DETECT if DMI is disabled
    Modify help text of SENSORS_SPD5118_DETECT
    Default SENSORS_SPD5118_DETECT to y if (!DMI || !X86)
     
v4: New patch

 drivers/hwmon/Kconfig   | 19 +++++++++++++++++++
 drivers/hwmon/spd5118.c |  4 +++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 7a84e7637b51..d5eced417fc3 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2193,6 +2193,25 @@ config SENSORS_SPD5118
 	  This driver can also be built as a module. If so, the module
 	  will be called spd5118.
 
+config SENSORS_SPD5118_DETECT
+	bool "Enable detect function"
+	depends on SENSORS_SPD5118
+	default (!DMI || !X86)
+	help
+	  If enabled, the driver auto-detects if a chip in the SPD address
+	  range is compliant to the SPD51888 standard and auto-instantiates
+	  if that is the case. If disabled, SPD5118 compliant devices have
+	  to be instantiated by other means. On X86 systems with DMI support
+	  this will typically be done from DMI DDR detection code in the
+	  I2C SMBus subsystem. Devicetree based systems will instantiate
+	  attached devices if the DIMMs are listed in the devicetree file.
+
+	  Disabling the detect function will speed up boot time and reduce
+	  the risk of mis-detecting SPD5118 compliant devices. However, it
+	  may result in missed DIMMs under some circumstances.
+
+	  If unsure, say Y.
+
 config SENSORS_TC74
 	tristate "Microchip TC74"
 	depends on I2C
diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
index 5cb5e52c0a38..19d203283a21 100644
--- a/drivers/hwmon/spd5118.c
+++ b/drivers/hwmon/spd5118.c
@@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
 }
 
 /* Return 0 if detection is successful, -ENODEV otherwise */
-static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
+static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
 {
 	struct i2c_adapter *adapter = client->adapter;
 	int regval;
@@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
 	},
 	.probe		= spd5118_probe,
 	.id_table	= spd5118_id,
+#ifdef CONFIG_SENSORS_SPD5118_DETECT
 	.detect		= spd5118_detect,
+#endif
 	.address_list	= normal_i2c,
 };
 
-- 
2.39.2

Re: [PATCH v4a 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Thomas Weißschuh]

On 2024-06-04 19:19:07+0000, Guenter Roeck wrote:
> With SPD5118 chip detection for the most part handled by the i2c-smbus
> core using DMI information, the spd5118 driver no longer needs to
> auto-detect spd5118 compliant chips.
> 
> Auto-detection by the driver is still needed on systems with no DMI support
> or on systems with more than eight DIMMs and can not be removed entirely.
> However, it affects boot time and introduces the risk of mis-identifying
> chips. Add configuration option to be able to disable it on systems where
> chip detection is handled outside the driver.
> 
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> Sent as v4a to avoid resending the entire series.
> 
> v4a:
>     Do not auto-select SENSORS_SPD5118_DETECT if DMI is disabled
>     Modify help text of SENSORS_SPD5118_DETECT
>     Default SENSORS_SPD5118_DETECT to y if (!DMI || !X86)
>      
> v4: New patch
> 
>  drivers/hwmon/Kconfig   | 19 +++++++++++++++++++
>  drivers/hwmon/spd5118.c |  4 +++-
>  2 files changed, 22 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index 7a84e7637b51..d5eced417fc3 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -2193,6 +2193,25 @@ config SENSORS_SPD5118
>  	  This driver can also be built as a module. If so, the module
>  	  will be called spd5118.
>  
> +config SENSORS_SPD5118_DETECT
> +	bool "Enable detect function"
> +	depends on SENSORS_SPD5118
> +	default (!DMI || !X86)
> +	help
> +	  If enabled, the driver auto-detects if a chip in the SPD address
> +	  range is compliant to the SPD51888 standard and auto-instantiates
> +	  if that is the case. If disabled, SPD5118 compliant devices have
> +	  to be instantiated by other means. On X86 systems with DMI support
> +	  this will typically be done from DMI DDR detection code in the
> +	  I2C SMBus subsystem. Devicetree based systems will instantiate
> +	  attached devices if the DIMMs are listed in the devicetree file.
> +
> +	  Disabling the detect function will speed up boot time and reduce
> +	  the risk of mis-detecting SPD5118 compliant devices. However, it
> +	  may result in missed DIMMs under some circumstances.
> +
> +	  If unsure, say Y.
> +
>  config SENSORS_TC74
>  	tristate "Microchip TC74"
>  	depends on I2C
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> index 5cb5e52c0a38..19d203283a21 100644
> --- a/drivers/hwmon/spd5118.c
> +++ b/drivers/hwmon/spd5118.c
> @@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
>  }
>  
>  /* Return 0 if detection is successful, -ENODEV otherwise */
> -static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
> +static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
>  {
>  	struct i2c_adapter *adapter = client->adapter;
>  	int regval;
> @@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
>  	},
>  	.probe		= spd5118_probe,
>  	.id_table	= spd5118_id,
> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>  	.detect		= spd5118_detect,
> +#endif
>  	.address_list	= normal_i2c,
>  };

For the if-deffery I proposed something during the last review,
I'm not sure if you saw it. If you did, please ignore this comment:


.address_list is also only needed with CONFIG_SENSORS_SPD5118_DETECT.

If you use

.detect         = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  spd5118_detect : NULL,
.address_list   = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  normal_i2c : NULL,

then the need for __maybe_unused goes away and type checking is a tiny
bit better.

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Thank you so much for taking this on.

Am 04.06.24 um 06:02 schrieb Guenter Roeck:
> Detect DDR5 memory and instantiate the SPD5118 driver automatically.
> 
> Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v5: New patch
> 
>   drivers/i2c/i2c-smbus.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
> index 97f338b123b1..8a0dab835761 100644
> --- a/drivers/i2c/i2c-smbus.c
> +++ b/drivers/i2c/i2c-smbus.c
> @@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap)
>   	case 0x1E:	/* LPDDR4 */
>   		name = "ee1004";
>   		break;
> +	case 0x22:	/* DDR5 */
> +	case 0x23:	/* LPDDR5 */
> +		name = "spd5118";
> +		break;
>   	default:
>   		dev_info(&adap->dev,
>   			 "Memory type 0x%02x not supported yet, not instantiating SPD\n",

Testing this on top of 6.10-rc2+ on a Supermicro X13SAE, Linux logs:

     $ dmesg | grep -e "DMI:" -e "Linux version" -e i2c-0
     [    0.000000] Linux version 
6.10.0-rc2.mx64.461-00036-g151dfab265df 
(pmenzel@foreveralone.molgen.mpg.de) (gcc (GCC) 12.3.0, GNU ld (GNU 
Binutils) 2.41) #74 SMP PREEMPT_DYNAMIC Wed Jun  5 08:24:59 CEST 2024
     [    0.000000] DMI: Supermicro Super Server/X13SAE, BIOS 2.0 10/17/2022
     [    0.000000] DMI: Memory slots populated: 4/4
     [    5.434488] i2c i2c-0: Successfully instantiated SPD at 0x50
     [    5.443848] i2c i2c-0: Successfully instantiated SPD at 0x51
     [    5.450033] i2c i2c-0: Successfully instantiated SPD at 0x52
     [    5.459378] i2c i2c-0: Successfully instantiated SPD at 0x53

Then with `sudo modprobe at24` and `sudo modprobe ee1004`, 
`decode-dimms` shows:

     $ sudo ./eeprom/decode-dimms
     # decode-dimms version 4.3

     Memory Serial Presence Detect Decoder
     By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
     Jean Delvare, Trent Piepho and others


     Number of SDRAM DIMMs detected and decoded: 0

This might be expected, and `decode-dimms` also needs to be updated.


Kind regards and thank you again for these patches,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

Hi Paul,

On Wed, Jun 05, 2024 at 02:21:50PM +0200, Paul Menzel wrote:
> Dear Guenter,
> 
> 
> Thank you so much for taking this on.
> 
> Am 04.06.24 um 06:02 schrieb Guenter Roeck:
> > Detect DDR5 memory and instantiate the SPD5118 driver automatically.
> > 
> > Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
> > Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> > Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> > ---
> > v5: New patch
> > 
> >   drivers/i2c/i2c-smbus.c | 4 ++++
> >   1 file changed, 4 insertions(+)
> > 
> > diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
> > index 97f338b123b1..8a0dab835761 100644
> > --- a/drivers/i2c/i2c-smbus.c
> > +++ b/drivers/i2c/i2c-smbus.c
> > @@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap)
> >   	case 0x1E:	/* LPDDR4 */
> >   		name = "ee1004";
> >   		break;
> > +	case 0x22:	/* DDR5 */
> > +	case 0x23:	/* LPDDR5 */
> > +		name = "spd5118";
> > +		break;
> >   	default:
> >   		dev_info(&adap->dev,
> >   			 "Memory type 0x%02x not supported yet, not instantiating SPD\n",
> 
> Testing this on top of 6.10-rc2+ on a Supermicro X13SAE, Linux logs:
> 
>     $ dmesg | grep -e "DMI:" -e "Linux version" -e i2c-0
>     [    0.000000] Linux version 6.10.0-rc2.mx64.461-00036-g151dfab265df
> (pmenzel@foreveralone.molgen.mpg.de) (gcc (GCC) 12.3.0, GNU ld (GNU
> Binutils) 2.41) #74 SMP PREEMPT_DYNAMIC Wed Jun  5 08:24:59 CEST 2024
>     [    0.000000] DMI: Supermicro Super Server/X13SAE, BIOS 2.0 10/17/2022
>     [    0.000000] DMI: Memory slots populated: 4/4
>     [    5.434488] i2c i2c-0: Successfully instantiated SPD at 0x50
>     [    5.443848] i2c i2c-0: Successfully instantiated SPD at 0x51
>     [    5.450033] i2c i2c-0: Successfully instantiated SPD at 0x52
>     [    5.459378] i2c i2c-0: Successfully instantiated SPD at 0x53
> 
> Then with `sudo modprobe at24` and `sudo modprobe ee1004`, `decode-dimms`
> shows:
> 
You'd actually have to load the spd5118 driver.

>     $ sudo ./eeprom/decode-dimms
>     # decode-dimms version 4.3
> 
>     Memory Serial Presence Detect Decoder
>     By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
>     Jean Delvare, Trent Piepho and others
> 
> 
>     Number of SDRAM DIMMs detected and decoded: 0
> 
> This might be expected, and `decode-dimms` also needs to be updated.
> 

Correct. The hack below makes it detect the DIMMs, but the data format
is all different, so it is only really useful to validate reading
the EEPROM (i.e., the checksum over the first 512 bytes of the eeprom
is correct). With that patch applied, I get

Decoding EEPROM: /sys/bus/i2c/drivers/spd5118/0-0050
Guessing DIMM is in                              bank 1
Kernel driver used                               spd5118

---=== SPD EEPROM Information ===---
EEPROM CRC of bytes 0-509 48 1                   OK (0x47A2)
# of bytes written to SDRAM EEPROM               1024
Total number of bytes in EEPROM                  1024
Fundamental Memory type                          DDR5 SDRAM

---=== Manufacturing Information ===---
Manufacturer                                     Invalid
Custom Manufacturer Data                         00 00 00 00 00 88 13 ("???????")
Manufacturing Location Code                      0x08
Part Number                                      Undefined
Revision Code                                    0x4C1D
Manufacturing Date                               0x0C00

and so on.

Thanks,
Guenter

---
diff --git a/eeprom/decode-dimms b/eeprom/decode-dimms
index 787b6f5..64b6e81 100755
--- a/eeprom/decode-dimms
+++ b/eeprom/decode-dimms
@@ -2407,7 +2407,12 @@ sub spd_sizes($)
 	my $bytes = shift;
 	my $type = $bytes->[2];
 
-	if ($type == 12 || $type == 14 || $type == 16 || $type == 17) {
+	if ($type == 18 || $type == 19 || $type == 20 || $type == 21) {
+		# DDR5
+		my $spd_len = 256 * ((($bytes->[0] >> 4) & 7) + 1);
+		my $used = $spd_len;
+		return ($spd_len, $used);
+	} elsif ($type == 12 || $type == 14 || $type == 16 || $type == 17) {
 		# DDR4
 		my $spd_len = 256 * (($bytes->[0] >> 4) & 7);
 		my $used = 128 * ($bytes->[0] & 15);
@@ -2516,11 +2521,17 @@ sub calculate_crc($$$)
 sub check_crc($)
 {
 	my $bytes = shift;
+	my $is_ddr5 = ($bytes->[0] & 0x70) == 0x30;
 	my $crc_cover = $bytes->[0] & 0x80 ? 116 : 125;
+	my $crc_start = 126;
+	if ($is_ddr5) {
+	    $crc_cover = 509;
+	    $crc_start = 510;
+	}
 	my $crc = calculate_crc($bytes, 0, $crc_cover + 1);
 
-	my $dimm_crc = ($bytes->[127] << 8) | $bytes->[126];
-	return ("EEPROM CRC of bytes 0-$crc_cover",
+	my $dimm_crc = ($bytes->[$crc_start + 1] << 8) | $bytes->[$crc_start];
+	return ("EEPROM CRC of bytes 0-$crc_cover $bytes->[0] $is_ddr5",
 		($dimm_crc == $crc) ? 1 : 0,
 		sprintf("0x%04X", $dimm_crc),
 		sprintf("0x%04X", $crc));
@@ -2622,6 +2633,7 @@ sub get_dimm_list
 	if ($use_sysfs) {
 		@drivers = ('eeprom',
 			    'at24',
+			    'spd5118',
 			    'ee1004');	# DDR4
 	} else {
 		@drivers = ('eeprom');
@@ -2640,14 +2652,13 @@ sub get_dimm_list
 				# We look for I2C devices like 0-0050 or 2-0051
 				next unless $file =~ /^\d+-[\da-f]+$/i;
 				next unless -d "$dir/$file";
-
 				# Device name must be eeprom (driver eeprom)
 				# spd (driver at24) or ee1004 (driver ee1004)
 				my $attr = sysfs_device_attribute("$dir/$file", "name");
 				next unless defined $attr &&
 					    ($attr eq "eeprom" ||
 					     $attr eq "spd" ||
-					     $attr eq "ee1004");	# DDR4
+					     $attr eq "spd5118" || $attr eq "ee1004");	# DDR4
 			} else {
 				next unless $file =~ /^eeprom-/;
 			}
@@ -2681,7 +2692,7 @@ sub get_dimm_list
 @dimm = get_dimm_list() unless $use_hexdump;
 
 for my $i (0 .. $#dimm) {
-	my @bytes = readspd(0, 128, $dimm[$i]->{file});
+	my @bytes = readspd(0, 512, $dimm[$i]->{file});
 	$dimm[$i]->{bytes} = \@bytes;
 	$dimm[$i]->{is_rambus} = $bytes[0] < 4;		# Simple heuristic
 	if ($dimm[$i]->{is_rambus} || $bytes[2] < 9) {

Re: [PATCH v4a 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Guenter Roeck]

On 6/5/24 02:22, Thomas Weißschuh wrote:
> On 2024-06-04 19:19:07+0000, Guenter Roeck wrote:
>> With SPD5118 chip detection for the most part handled by the i2c-smbus
>> core using DMI information, the spd5118 driver no longer needs to
>> auto-detect spd5118 compliant chips.
>>
>> Auto-detection by the driver is still needed on systems with no DMI support
>> or on systems with more than eight DIMMs and can not be removed entirely.
>> However, it affects boot time and introduces the risk of mis-identifying
>> chips. Add configuration option to be able to disable it on systems where
>> chip detection is handled outside the driver.
>>
>> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> Sent as v4a to avoid resending the entire series.
>>
>> v4a:
>>      Do not auto-select SENSORS_SPD5118_DETECT if DMI is disabled
>>      Modify help text of SENSORS_SPD5118_DETECT
>>      Default SENSORS_SPD5118_DETECT to y if (!DMI || !X86)
>>       
>> v4: New patch
>>
>>   drivers/hwmon/Kconfig   | 19 +++++++++++++++++++
>>   drivers/hwmon/spd5118.c |  4 +++-
>>   2 files changed, 22 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
>> index 7a84e7637b51..d5eced417fc3 100644
>> --- a/drivers/hwmon/Kconfig
>> +++ b/drivers/hwmon/Kconfig
>> @@ -2193,6 +2193,25 @@ config SENSORS_SPD5118
>>   	  This driver can also be built as a module. If so, the module
>>   	  will be called spd5118.
>>   
>> +config SENSORS_SPD5118_DETECT
>> +	bool "Enable detect function"
>> +	depends on SENSORS_SPD5118
>> +	default (!DMI || !X86)
>> +	help
>> +	  If enabled, the driver auto-detects if a chip in the SPD address
>> +	  range is compliant to the SPD51888 standard and auto-instantiates
>> +	  if that is the case. If disabled, SPD5118 compliant devices have
>> +	  to be instantiated by other means. On X86 systems with DMI support
>> +	  this will typically be done from DMI DDR detection code in the
>> +	  I2C SMBus subsystem. Devicetree based systems will instantiate
>> +	  attached devices if the DIMMs are listed in the devicetree file.
>> +
>> +	  Disabling the detect function will speed up boot time and reduce
>> +	  the risk of mis-detecting SPD5118 compliant devices. However, it
>> +	  may result in missed DIMMs under some circumstances.
>> +
>> +	  If unsure, say Y.
>> +
>>   config SENSORS_TC74
>>   	tristate "Microchip TC74"
>>   	depends on I2C
>> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
>> index 5cb5e52c0a38..19d203283a21 100644
>> --- a/drivers/hwmon/spd5118.c
>> +++ b/drivers/hwmon/spd5118.c
>> @@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
>>   }
>>   
>>   /* Return 0 if detection is successful, -ENODEV otherwise */
>> -static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
>> +static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
>>   {
>>   	struct i2c_adapter *adapter = client->adapter;
>>   	int regval;
>> @@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
>>   	},
>>   	.probe		= spd5118_probe,
>>   	.id_table	= spd5118_id,
>> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>>   	.detect		= spd5118_detect,
>> +#endif
>>   	.address_list	= normal_i2c,
>>   };
> 
> For the if-deffery I proposed something during the last review,
> I'm not sure if you saw it. If you did, please ignore this comment:
> 

I missed that, sorry (and I hope I didn't miss anything else).

> 
> .address_list is also only needed with CONFIG_SENSORS_SPD5118_DETECT.
> 
> If you use
> 
> .detect         = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  spd5118_detect : NULL,
> .address_list   = IS_ENABLED(CONFIG_SENSORS_SPD5118_DETECT) ?  normal_i2c : NULL,
> 
> then the need for __maybe_unused goes away and type checking is a tiny
> bit better.

It does let me drop the #ifdef, so I agree it is a bit better.
I made that change, but I'll wait for a couple of days before sending
the updated version to give others time for additional feedback.

Thanks,
Guenter

Re: [PATCH v4 2/6] hwmon: Add support for SPD5118 compliant temperature sensors

[Armin Wolf]

Am 04.06.24 um 06:02 schrieb Guenter Roeck:

> Add support for SPD5118 (Jedec JESD300) compliant temperature
> sensors. Such sensors are typically found on DDR5 memory modules.

Tested-by: Armin Wolf <W_Armin@gmx.de>

> Cc: René Rebe <rene@exactcode.de>
> Cc: Thomas Weißschuh <linux@weissschuh.net>
> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
> Tested-by: Thomas Weißschuh <linux@weissschuh.net>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: No change
>
> v3: Shorten JESD300-5B.01 to JESD300; 5B.01 refers to the version
>      of the standard
>      Drop unnecessary 'attr' parameter from spd5118_{read,write}_enable()
>
> v2: Drop PEC property documentation
>      Add note indicating that alarm attributes are sticky until read
>      to documentation
>      Fix detect function
>      Fix misspelling in Makefile (CONFIG_SENSORS_SPD5118->CONFIG_SENSORS_SPD5118)
>
>   Documentation/hwmon/index.rst   |   1 +
>   Documentation/hwmon/spd5118.rst |  55 ++++
>   drivers/hwmon/Kconfig           |  12 +
>   drivers/hwmon/Makefile          |   1 +
>   drivers/hwmon/spd5118.c         | 481 ++++++++++++++++++++++++++++++++
>   5 files changed, 550 insertions(+)
>   create mode 100644 Documentation/hwmon/spd5118.rst
>   create mode 100644 drivers/hwmon/spd5118.c
>
> diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
> index 03d313af469a..6e7b8726b60c 100644
> --- a/Documentation/hwmon/index.rst
> +++ b/Documentation/hwmon/index.rst
> @@ -215,6 +215,7 @@ Hardware Monitoring Kernel Drivers
>      smsc47m192
>      smsc47m1
>      sparx5-temp
> +   spd5118
>      stpddc60
>      surface_fan
>      sy7636a-hwmon
> diff --git a/Documentation/hwmon/spd5118.rst b/Documentation/hwmon/spd5118.rst
> new file mode 100644
> index 000000000000..a15d75aa2066
> --- /dev/null
> +++ b/Documentation/hwmon/spd5118.rst
> @@ -0,0 +1,55 @@
> +.. SPDX-License-Identifier: GPL-2.0-or-later
> +
> +Kernel driver spd5118
> +=====================
> +
> +Supported chips:
> +
> +  * SPD5118 (JEDEC JESD300) compliant temperature sensor chips
> +
> +    JEDEC standard download:
> +	https://www.jedec.org/standards-documents/docs/jesd300-5b01
> +	(account required)
> +
> +
> +    Prefix: 'spd5118'
> +
> +    Addresses scanned: I2C 0x50 - 0x57
> +
> +Author:
> +	Guenter Roeck <linux@roeck-us.net>
> +
> +
> +Description
> +-----------
> +
> +This driver implements support for SPD5118 (JEDEC JESD300) compliant temperature
> +sensors, which are used on many DDR5 memory modules. Some systems use the sensor
> +to prevent memory overheating by automatically throttling the memory controller.
> +
> +The driver auto-detects SPD5118 compliant chips, but can also be instantiated
> +using devicetree/firmware nodes.
> +
> +A SPD5118 compliant chip supports a single temperature sensor. Critical minimum,
> +minimum, maximum, and critical temperature can be configured. There are alarms
> +for low critical, low, high, and critical thresholds.
> +
> +
> +Hardware monitoring sysfs entries
> +---------------------------------
> +
> +======================= ==================================
> +temp1_input		Temperature (RO)
> +temp1_lcrit		Low critical high temperature (RW)
> +temp1_min		Minimum temperature (RW)
> +temp1_max		Maximum temperature (RW)
> +temp1_crit		Critical high temperature (RW)
> +
> +temp1_lcrit_alarm	Temperature low critical alarm
> +temp1_min_alarm		Temperature low alarm
> +temp1_max_alarm		Temperature high alarm
> +temp1_crit_alarm	Temperature critical alarm
> +======================= ==================================
> +
> +Alarm attributes are sticky until read and will be cleared afterwards
> +unless the alarm condition still applies.
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index e14ae18a973b..7a84e7637b51 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -2181,6 +2181,18 @@ config SENSORS_INA3221
>   	  This driver can also be built as a module. If so, the module
>   	  will be called ina3221.
>
> +config SENSORS_SPD5118
> +	tristate "SPD5118 Compliant Temperature Sensors"
> +	depends on I2C
> +	select REGMAP_I2C
> +	help
> +	  If you say yes here you get support for SPD5118 (JEDEC JESD300)
> +	  compliant temperature sensors. Such sensors are found on DDR5 memory
> +	  modules.
> +
> +	  This driver can also be built as a module. If so, the module
> +	  will be called spd5118.
> +
>   config SENSORS_TC74
>   	tristate "Microchip TC74"
>   	depends on I2C
> diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
> index e3f25475d1f0..6574ca67d761 100644
> --- a/drivers/hwmon/Makefile
> +++ b/drivers/hwmon/Makefile
> @@ -207,6 +207,7 @@ obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
>   obj-$(CONFIG_SENSORS_SMSC47M1)	+= smsc47m1.o
>   obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
>   obj-$(CONFIG_SENSORS_SPARX5)	+= sparx5-temp.o
> +obj-$(CONFIG_SENSORS_SPD5118)	+= spd5118.o
>   obj-$(CONFIG_SENSORS_STTS751)	+= stts751.o
>   obj-$(CONFIG_SENSORS_SURFACE_FAN)+= surface_fan.o
>   obj-$(CONFIG_SENSORS_SY7636A)	+= sy7636a-hwmon.o
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> new file mode 100644
> index 000000000000..d3fc0ae17743
> --- /dev/null
> +++ b/drivers/hwmon/spd5118.c
> @@ -0,0 +1,481 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Driver for Jedec 5118 compliant temperature sensors
> + *
> + * Derived from https://github.com/Steve-Tech/SPD5118-DKMS
> + * Originally from T/2 driver at https://t2sde.org/packages/linux
> + *	Copyright (c) 2023 René Rebe, ExactCODE GmbH; Germany.
> + *
> + * Copyright (c) 2024 Guenter Roeck
> + *
> + * Inspired by ee1004.c and jc42.c.
> + *
> + * SPD5118 compliant temperature sensors are typically used on DDR5
> + * memory modules.
> + */
> +
> +#include <linux/bitops.h>
> +#include <linux/bits.h>
> +#include <linux/err.h>
> +#include <linux/i2c.h>
> +#include <linux/hwmon.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +#include <linux/units.h>
> +
> +/* Addresses to scan */
> +static const unsigned short normal_i2c[] = {
> +	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, I2C_CLIENT_END };
> +
> +/* SPD5118 registers. */
> +#define SPD5118_REG_TYPE		0x00	/* MR0:MR1 */
> +#define SPD5118_REG_REVISION		0x02	/* MR2 */
> +#define SPD5118_REG_VENDOR		0x03	/* MR3:MR4 */
> +#define SPD5118_REG_CAPABILITY		0x05	/* MR5 */
> +#define SPD5118_REG_I2C_LEGACY_MODE	0x0B	/* MR11 */
> +#define SPD5118_REG_TEMP_CLR		0x13	/* MR19 */
> +#define SPD5118_REG_ERROR_CLR		0x14	/* MR20 */
> +#define SPD5118_REG_TEMP_CONFIG		0x1A	/* MR26 */
> +#define SPD5118_REG_TEMP_MAX		0x1c	/* MR28:MR29 */
> +#define SPD5118_REG_TEMP_MIN		0x1e	/* MR30:MR31 */
> +#define SPD5118_REG_TEMP_CRIT		0x20	/* MR32:MR33 */
> +#define SPD5118_REG_TEMP_LCRIT		0x22	/* MR34:MR35 */
> +#define SPD5118_REG_TEMP		0x31	/* MR49:MR50 */
> +#define SPD5118_REG_TEMP_STATUS		0x33	/* MR51 */
> +
> +#define SPD5118_TEMP_STATUS_HIGH	BIT(0)
> +#define SPD5118_TEMP_STATUS_LOW		BIT(1)
> +#define SPD5118_TEMP_STATUS_CRIT	BIT(2)
> +#define SPD5118_TEMP_STATUS_LCRIT	BIT(3)
> +
> +#define SPD5118_CAP_TS_SUPPORT		BIT(1)	/* temperature sensor support */
> +
> +#define SPD5118_TS_DISABLE		BIT(0)	/* temperature sensor disable */
> +
> +/* Temperature unit in millicelsius */
> +#define SPD5118_TEMP_UNIT		(MILLIDEGREE_PER_DEGREE / 4)
> +/* Representable temperature range in millicelsius */
> +#define SPD5118_TEMP_RANGE_MIN		-256000
> +#define SPD5118_TEMP_RANGE_MAX		255750
> +
> +static int spd5118_temp_from_reg(u16 reg)
> +{
> +	int temp = sign_extend32(reg >> 2, 10);
> +
> +	return temp * SPD5118_TEMP_UNIT;
> +}
> +
> +static u16 spd5118_temp_to_reg(long temp)
> +{
> +	temp = clamp_val(temp, SPD5118_TEMP_RANGE_MIN, SPD5118_TEMP_RANGE_MAX);
> +	return (DIV_ROUND_CLOSEST(temp, SPD5118_TEMP_UNIT) & 0x7ff) << 2;
> +}
> +
> +static int spd5118_read_temp(struct regmap *regmap, u32 attr, long *val)
> +{
> +	int reg, err;
> +	u8 regval[2];
> +	u16 temp;
> +
> +	switch (attr) {
> +	case hwmon_temp_input:
> +		reg = SPD5118_REG_TEMP;
> +		break;
> +	case hwmon_temp_max:
> +		reg = SPD5118_REG_TEMP_MAX;
> +		break;
> +	case hwmon_temp_min:
> +		reg = SPD5118_REG_TEMP_MIN;
> +		break;
> +	case hwmon_temp_crit:
> +		reg = SPD5118_REG_TEMP_CRIT;
> +		break;
> +	case hwmon_temp_lcrit:
> +		reg = SPD5118_REG_TEMP_LCRIT;
> +		break;
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +
> +	err = regmap_bulk_read(regmap, reg, regval, 2);
> +	if (err)
> +		return err;
> +
> +	temp = (regval[1] << 8) | regval[0];
> +
> +	*val = spd5118_temp_from_reg(temp);
> +	return 0;
> +}
> +
> +static int spd5118_read_alarm(struct regmap *regmap, u32 attr, long *val)
> +{
> +	unsigned int mask, regval;
> +	int err;
> +
> +	switch (attr) {
> +	case hwmon_temp_max_alarm:
> +		mask = SPD5118_TEMP_STATUS_HIGH;
> +		break;
> +	case hwmon_temp_min_alarm:
> +		mask = SPD5118_TEMP_STATUS_LOW;
> +		break;
> +	case hwmon_temp_crit_alarm:
> +		mask = SPD5118_TEMP_STATUS_CRIT;
> +		break;
> +	case hwmon_temp_lcrit_alarm:
> +		mask = SPD5118_TEMP_STATUS_LCRIT;
> +		break;
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +
> +	err = regmap_read(regmap, SPD5118_REG_TEMP_STATUS, &regval);
> +	if (err < 0)
> +		return err;
> +	*val = !!(regval & mask);
> +	if (*val)
> +		return regmap_write(regmap, SPD5118_REG_TEMP_CLR, mask);
> +	return 0;
> +}
> +
> +static int spd5118_read_enable(struct regmap *regmap, long *val)
> +{
> +	u32 regval;
> +	int err;
> +
> +	err = regmap_read(regmap, SPD5118_REG_TEMP_CONFIG, &regval);
> +	if (err < 0)
> +		return err;
> +	*val = !(regval & SPD5118_TS_DISABLE);
> +	return 0;
> +}
> +
> +static int spd5118_read(struct device *dev, enum hwmon_sensor_types type,
> +			u32 attr, int channel, long *val)
> +{
> +	struct regmap *regmap = dev_get_drvdata(dev);
> +
> +	if (type != hwmon_temp)
> +		return -EOPNOTSUPP;
> +
> +	switch (attr) {
> +	case hwmon_temp_input:
> +	case hwmon_temp_max:
> +	case hwmon_temp_min:
> +	case hwmon_temp_crit:
> +	case hwmon_temp_lcrit:
> +		return spd5118_read_temp(regmap, attr, val);
> +	case hwmon_temp_max_alarm:
> +	case hwmon_temp_min_alarm:
> +	case hwmon_temp_crit_alarm:
> +	case hwmon_temp_lcrit_alarm:
> +		return spd5118_read_alarm(regmap, attr, val);
> +	case hwmon_temp_enable:
> +		return spd5118_read_enable(regmap, val);
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +}
> +
> +static int spd5118_write_temp(struct regmap *regmap, u32 attr, long val)
> +{
> +	u8 regval[2];
> +	u16 temp;
> +	int reg;
> +
> +	switch (attr) {
> +	case hwmon_temp_max:
> +		reg = SPD5118_REG_TEMP_MAX;
> +		break;
> +	case hwmon_temp_min:
> +		reg = SPD5118_REG_TEMP_MIN;
> +		break;
> +	case hwmon_temp_crit:
> +		reg = SPD5118_REG_TEMP_CRIT;
> +		break;
> +	case hwmon_temp_lcrit:
> +		reg = SPD5118_REG_TEMP_LCRIT;
> +		break;
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +
> +	temp = spd5118_temp_to_reg(val);
> +	regval[0] = temp & 0xff;
> +	regval[1] = temp >> 8;
> +
> +	return regmap_bulk_write(regmap, reg, regval, 2);
> +}
> +
> +static int spd5118_write_enable(struct regmap *regmap, long val)
> +{
> +	if (val && val != 1)
> +		return -EINVAL;
> +
> +	return regmap_update_bits(regmap, SPD5118_REG_TEMP_CONFIG,
> +				  SPD5118_TS_DISABLE,
> +				  val ? 0 : SPD5118_TS_DISABLE);
> +}
> +
> +static int spd5118_temp_write(struct regmap *regmap, u32 attr, long val)
> +{
> +	switch (attr) {
> +	case hwmon_temp_max:
> +	case hwmon_temp_min:
> +	case hwmon_temp_crit:
> +	case hwmon_temp_lcrit:
> +		return spd5118_write_temp(regmap, attr, val);
> +	case hwmon_temp_enable:
> +		return spd5118_write_enable(regmap, val);
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +}
> +
> +static int spd5118_write(struct device *dev, enum hwmon_sensor_types type,
> +			 u32 attr, int channel, long val)
> +{
> +	struct regmap *regmap = dev_get_drvdata(dev);
> +
> +	switch (type) {
> +	case hwmon_temp:
> +		return spd5118_temp_write(regmap, attr, val);
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +}
> +
> +static umode_t spd5118_is_visible(const void *_data, enum hwmon_sensor_types type,
> +				  u32 attr, int channel)
> +{
> +	if (type != hwmon_temp)
> +		return 0;
> +
> +	switch (attr) {
> +	case hwmon_temp_input:
> +		return 0444;
> +	case hwmon_temp_min:
> +	case hwmon_temp_max:
> +	case hwmon_temp_lcrit:
> +	case hwmon_temp_crit:
> +	case hwmon_temp_enable:
> +		return 0644;
> +	case hwmon_temp_min_alarm:
> +	case hwmon_temp_max_alarm:
> +	case hwmon_temp_crit_alarm:
> +	case hwmon_temp_lcrit_alarm:
> +		return 0444;
> +	default:
> +		return 0;
> +	}
> +}
> +
> +static inline bool spd5118_parity8(u8 w)
> +{
> +	w ^= w >> 4;
> +	return (0x6996 >> (w & 0xf)) & 1;
> +}
> +
> +/*
> + * Bank and vendor id are 8-bit fields with seven data bits and odd parity.
> + * Vendor IDs 0 and 0x7f are invalid.
> + * See Jedec standard JEP106BJ for details and a list of assigned vendor IDs.
> + */
> +static bool spd5118_vendor_valid(u8 bank, u8 id)
> +{
> +	if (!spd5118_parity8(bank) || !spd5118_parity8(id))
> +		return false;
> +
> +	id &= 0x7f;
> +	return id && id != 0x7f;
> +}
> +
> +/* Return 0 if detection is successful, -ENODEV otherwise */
> +static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
> +{
> +	struct i2c_adapter *adapter = client->adapter;
> +	int regval;
> +
> +	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
> +				     I2C_FUNC_SMBUS_WORD_DATA))
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_word_swapped(client, SPD5118_REG_TYPE);
> +	if (regval != 0x5118)
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_word_data(client, SPD5118_REG_VENDOR);
> +	if (regval < 0 || !spd5118_vendor_valid(regval & 0xff, regval >> 8))
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_CAPABILITY);
> +	if (regval < 0)
> +		return -ENODEV;
> +	if (!(regval & SPD5118_CAP_TS_SUPPORT) || (regval & 0xfc))
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_TEMP_CLR);
> +	if (regval)
> +		return -ENODEV;
> +	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_ERROR_CLR);
> +	if (regval)
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_REVISION);
> +	if (regval < 0 || (regval & 0xc1))
> +		return -ENODEV;
> +
> +	regval = i2c_smbus_read_byte_data(client, SPD5118_REG_TEMP_CONFIG);
> +	if (regval < 0)
> +		return -ENODEV;
> +	if (regval & ~SPD5118_TS_DISABLE)
> +		return -ENODEV;
> +
> +	strscpy(info->type, "spd5118", I2C_NAME_SIZE);
> +	return 0;
> +}
> +
> +static const struct hwmon_channel_info *spd5118_info[] = {
> +	HWMON_CHANNEL_INFO(chip,
> +			   HWMON_C_REGISTER_TZ),
> +	HWMON_CHANNEL_INFO(temp,
> +			   HWMON_T_INPUT |
> +			   HWMON_T_LCRIT | HWMON_T_LCRIT_ALARM |
> +			   HWMON_T_MIN | HWMON_T_MIN_ALARM |
> +			   HWMON_T_MAX | HWMON_T_MAX_ALARM |
> +			   HWMON_T_CRIT | HWMON_T_CRIT_ALARM |
> +			   HWMON_T_ENABLE),
> +	NULL
> +};
> +
> +static const struct hwmon_ops spd5118_hwmon_ops = {
> +	.is_visible = spd5118_is_visible,
> +	.read = spd5118_read,
> +	.write = spd5118_write,
> +};
> +
> +static const struct hwmon_chip_info spd5118_chip_info = {
> +	.ops = &spd5118_hwmon_ops,
> +	.info = spd5118_info,
> +};
> +
> +static bool spd5118_writeable_reg(struct device *dev, unsigned int reg)
> +{
> +	switch (reg) {
> +	case SPD5118_REG_TEMP_CLR:
> +	case SPD5118_REG_TEMP_CONFIG:
> +	case SPD5118_REG_TEMP_MAX:
> +	case SPD5118_REG_TEMP_MAX + 1:
> +	case SPD5118_REG_TEMP_MIN:
> +	case SPD5118_REG_TEMP_MIN + 1:
> +	case SPD5118_REG_TEMP_CRIT:
> +	case SPD5118_REG_TEMP_CRIT + 1:
> +	case SPD5118_REG_TEMP_LCRIT:
> +	case SPD5118_REG_TEMP_LCRIT + 1:
> +		return true;
> +	default:
> +		return false;
> +	}
> +}
> +
> +static bool spd5118_volatile_reg(struct device *dev, unsigned int reg)
> +{
> +	switch (reg) {
> +	case SPD5118_REG_TEMP_CLR:
> +	case SPD5118_REG_ERROR_CLR:
> +	case SPD5118_REG_TEMP:
> +	case SPD5118_REG_TEMP + 1:
> +	case SPD5118_REG_TEMP_STATUS:
> +		return true;
> +	default:
> +		return false;
> +	}
> +}
> +
> +static const struct regmap_config spd5118_regmap_config = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +	.max_register = SPD5118_REG_TEMP_STATUS,
> +	.writeable_reg = spd5118_writeable_reg,
> +	.volatile_reg = spd5118_volatile_reg,
> +	.cache_type = REGCACHE_MAPLE,
> +};
> +
> +static int spd5118_probe(struct i2c_client *client)
> +{
> +	struct device *dev = &client->dev;
> +	unsigned int regval, revision, vendor, bank;
> +	struct device *hwmon_dev;
> +	struct regmap *regmap;
> +	int err;
> +
> +	regmap = devm_regmap_init_i2c(client, &spd5118_regmap_config);
> +	if (IS_ERR(regmap))
> +		return dev_err_probe(dev, PTR_ERR(regmap), "regmap init failed\n");
> +
> +	err = regmap_read(regmap, SPD5118_REG_CAPABILITY, &regval);
> +	if (err)
> +		return err;
> +	if (!(regval & SPD5118_CAP_TS_SUPPORT))
> +		return -ENODEV;
> +
> +	err = regmap_read(regmap, SPD5118_REG_REVISION, &revision);
> +	if (err)
> +		return err;
> +
> +	err = regmap_read(regmap, SPD5118_REG_VENDOR, &bank);
> +	if (err)
> +		return err;
> +	err = regmap_read(regmap, SPD5118_REG_VENDOR + 1, &vendor);
> +	if (err)
> +		return err;
> +	if (!spd5118_vendor_valid(bank, vendor))
> +		return -ENODEV;
> +
> +	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
> +							 regmap, &spd5118_chip_info,
> +							 NULL);
> +	if (IS_ERR(hwmon_dev))
> +		return PTR_ERR(hwmon_dev);
> +
> +	/*
> +	 * From JESD300-5B
> +	 *   MR2 bits [5:4]: Major revision, 1..4
> +	 *   MR2 bits [3:1]: Minor revision, 0..8? Probably a typo, assume 1..8
> +	 */
> +	dev_info(dev, "DDR5 temperature sensor: vendor 0x%02x:0x%02x revision %d.%d\n",
> +		 bank & 0x7f, vendor, ((revision >> 4) & 0x03) + 1, ((revision >> 1) & 0x07) + 1);
> +
> +	return 0;
> +}
> +
> +static const struct i2c_device_id spd5118_id[] = {
> +	{ "spd5118", 0 },
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(i2c, spd5118_id);
> +
> +static const struct of_device_id spd5118_of_ids[] = {
> +	{ .compatible = "jedec,spd5118", },
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(of, spd5118_of_ids);
> +
> +static struct i2c_driver spd5118_driver = {
> +	.class		= I2C_CLASS_HWMON,
> +	.driver = {
> +		.name	= "spd5118",
> +		.of_match_table = spd5118_of_ids,
> +	},
> +	.probe		= spd5118_probe,
> +	.id_table	= spd5118_id,
> +	.detect		= spd5118_detect,
> +	.address_list	= normal_i2c,
> +};
> +
> +module_i2c_driver(spd5118_driver);
> +
> +MODULE_AUTHOR("René Rebe <rene@exactcode.de>");
> +MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
> +MODULE_DESCRIPTION("SPD 5118 driver");
> +MODULE_LICENSE("GPL");

Re: [PATCH v4 3/6] hwmon: (spd5118) Add suspend/resume support

[Armin Wolf]

Am 04.06.24 um 06:02 schrieb Guenter Roeck:

> Add suspend/resume support to ensure that limit and configuration
> registers are updated and synchronized after a suspend/resume cycle.

Tested-by: Armin Wolf <W_Armin@gmx.de>

>
> Cc: Armin Wolf <W_Armin@gmx.de>
> Cc: Stephen Horvath <s.horvath@outlook.com.au>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v4: Fix bug seen if the enable attribute was never read prior
>      to a suspend/resume cycle.
>
> v3: No change
>
> v2: New patch
>
>   drivers/hwmon/spd5118.c | 39 +++++++++++++++++++++++++++++++++++++++
>   1 file changed, 39 insertions(+)
>
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> index d3fc0ae17743..d55c073ff5fd 100644
> --- a/drivers/hwmon/spd5118.c
> +++ b/drivers/hwmon/spd5118.c
> @@ -20,6 +20,7 @@
>   #include <linux/i2c.h>
>   #include <linux/hwmon.h>
>   #include <linux/module.h>
> +#include <linux/pm.h>
>   #include <linux/regmap.h>
>   #include <linux/units.h>
>
> @@ -432,6 +433,8 @@ static int spd5118_probe(struct i2c_client *client)
>   	if (!spd5118_vendor_valid(bank, vendor))
>   		return -ENODEV;
>
> +	dev_set_drvdata(dev, regmap);
> +
>   	hwmon_dev = devm_hwmon_device_register_with_info(dev, "spd5118",
>   							 regmap, &spd5118_chip_info,
>   							 NULL);
> @@ -449,6 +452,41 @@ static int spd5118_probe(struct i2c_client *client)
>   	return 0;
>   }
>
> +static int spd5118_suspend(struct device *dev)
> +{
> +	struct regmap *regmap = dev_get_drvdata(dev);
> +	u32 regval;
> +	int err;
> +
> +	/*
> +	 * Make sure the configuration register in the regmap cache is current
> +	 * before bypassing it.
> +	 */
> +	err = regmap_read(regmap, SPD5118_REG_TEMP_CONFIG, &regval);
> +	if (err < 0)
> +		return err;
> +
> +	regcache_cache_bypass(regmap, true);
> +	regmap_update_bits(regmap, SPD5118_REG_TEMP_CONFIG, SPD5118_TS_DISABLE,
> +			   SPD5118_TS_DISABLE);
> +	regcache_cache_bypass(regmap, false);
> +
> +	regcache_cache_only(regmap, true);
> +	regcache_mark_dirty(regmap);
> +
> +	return 0;
> +}
> +
> +static int spd5118_resume(struct device *dev)
> +{
> +	struct regmap *regmap = dev_get_drvdata(dev);
> +
> +	regcache_cache_only(regmap, false);
> +	return regcache_sync(regmap);
> +}
> +
> +static DEFINE_SIMPLE_DEV_PM_OPS(spd5118_pm_ops, spd5118_suspend, spd5118_resume);
> +
>   static const struct i2c_device_id spd5118_id[] = {
>   	{ "spd5118", 0 },
>   	{ }
> @@ -466,6 +504,7 @@ static struct i2c_driver spd5118_driver = {
>   	.driver = {
>   		.name	= "spd5118",
>   		.of_match_table = spd5118_of_ids,
> +		.pm = pm_sleep_ptr(&spd5118_pm_ops),
>   	},
>   	.probe		= spd5118_probe,
>   	.id_table	= spd5118_id,

Re: [PATCH v4 4/6] hwmon: (spd5118) Add support for reading SPD data

[Armin Wolf]

Am 04.06.24 um 16:30 schrieb Guenter Roeck:

> On 6/4/24 04:58, Armin Wolf wrote:
>> Am 04.06.24 um 06:02 schrieb Guenter Roeck:
>>
>>> Add support for reading SPD NVMEM data from SPD5118 (Jedec JESD300)
>>> compliant memory modules. NVMEM write operation is not supported.
>>>
>>> NVMEM support is optional. If CONFIG_NVMEM is disabled, the driver will
>>> still instantiate but not provide NVMEM attribute files.
>>>
>>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>>> ---
>>> v4: Use NVMEM_DEVID_NONE instead of NVMEM_DEVID_AUTO
>>>      Ignore nvmem registration failure if nvmem support is disabled
>>>
>>> v3: New patch
>>>
>>>   Documentation/hwmon/spd5118.rst |   8 ++
>>>   drivers/hwmon/spd5118.c         | 147
>>> +++++++++++++++++++++++++++++++-
>
>
> [ ... ]
>
>>> +static int spd5118_nvmem_init(struct device *dev, struct
>>> spd5118_data *data)
>>> +{
>>> +    struct nvmem_config nvmem_config = {
>>> +        .type = NVMEM_TYPE_EEPROM,
>>> +        .name = dev_name(dev),
>>> +        .id = NVMEM_DEVID_NONE,
>>> +        .dev = dev,
>>> +        .base_dev = dev,
>>> +        .read_only = true,
>>> +        .root_only = false,
>>> +        .owner = THIS_MODULE,
>>> +        .compat = true,
>>
>> Hi,
>>
>> do we really need this setting here?
>>
>
> The "eeprom" file is only created if both "base_dev" and "compat" are
> set.
> decode-dimms depends on it. While decode-dimms has to be updated anyway,
> I did not want to make that more complicated than necessary.
>
I understand.

> Another option would be not to use the nvmem subsystem in the first
> place,
> similar to the ee1004 driver, but my understanding is that the use of the
> nvmem subsystem is preferred.
>
> [ ... ]
>
>>> +
>>> +    err = spd5118_nvmem_init(dev, data);
>>> +    /* Ignore if NVMEM support is disabled */
>>> +    if (err && err != -EOPNOTSUPP) {
>>
>> Maybe we can use IS_REACHABLE(CONFIG_NVMEM) here?
>>
>
> We could, but I prefer to avoid conditionals in the code if possible,
> the dummy devm_nvmem_register() is there specifically to cover that
> situation, and no other driver does that. Also, since the underlying
> functions are dummy, the compiler should optimize it all away if
> CONFIG_NVMEM=n.
>
> Thanks,
> Guenter
>
Ok, then i am ok with with this patch.

Tested-by: Armin Wolf <W_Armin@gmx.de>

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Armin Wolf]

Am 04.06.24 um 06:02 schrieb Guenter Roeck:

> Detect DDR5 memory and instantiate the SPD5118 driver automatically.

Hi,

the text "Only works for DDR, DDR2, DDR3 and DDR4 for now" should be updated too.
With this fixed:

Reviewed-by: Armin Wolf <W_Armin@gmx.de>

>
> Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> v5: New patch
>
>   drivers/i2c/i2c-smbus.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
> index 97f338b123b1..8a0dab835761 100644
> --- a/drivers/i2c/i2c-smbus.c
> +++ b/drivers/i2c/i2c-smbus.c
> @@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap)
>   	case 0x1E:	/* LPDDR4 */
>   		name = "ee1004";
>   		break;
> +	case 0x22:	/* DDR5 */
> +	case 0x23:	/* LPDDR5 */
> +		name = "spd5118";
> +		break;
>   	default:
>   		dev_info(&adap->dev,
>   			 "Memory type 0x%02x not supported yet, not instantiating SPD\n",

Re: [PATCH v4a 6/6] hwmon: (spd5118) Add configuration option for auto-detection

[Armin Wolf]

Am 05.06.24 um 04:19 schrieb Guenter Roeck:

> With SPD5118 chip detection for the most part handled by the i2c-smbus
> core using DMI information, the spd5118 driver no longer needs to
> auto-detect spd5118 compliant chips.
>
> Auto-detection by the driver is still needed on systems with no DMI support
> or on systems with more than eight DIMMs and can not be removed entirely.
> However, it affects boot time and introduces the risk of mis-identifying
> chips. Add configuration option to be able to disable it on systems where
> chip detection is handled outside the driver.

Tested-by: Armin Wolf <W_Armin@gmx.de>

> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> Sent as v4a to avoid resending the entire series.
>
> v4a:
>      Do not auto-select SENSORS_SPD5118_DETECT if DMI is disabled
>      Modify help text of SENSORS_SPD5118_DETECT
>      Default SENSORS_SPD5118_DETECT to y if (!DMI || !X86)
>
> v4: New patch
>
>   drivers/hwmon/Kconfig   | 19 +++++++++++++++++++
>   drivers/hwmon/spd5118.c |  4 +++-
>   2 files changed, 22 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index 7a84e7637b51..d5eced417fc3 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -2193,6 +2193,25 @@ config SENSORS_SPD5118
>   	  This driver can also be built as a module. If so, the module
>   	  will be called spd5118.
>
> +config SENSORS_SPD5118_DETECT
> +	bool "Enable detect function"
> +	depends on SENSORS_SPD5118
> +	default (!DMI || !X86)
> +	help
> +	  If enabled, the driver auto-detects if a chip in the SPD address
> +	  range is compliant to the SPD51888 standard and auto-instantiates
> +	  if that is the case. If disabled, SPD5118 compliant devices have
> +	  to be instantiated by other means. On X86 systems with DMI support
> +	  this will typically be done from DMI DDR detection code in the
> +	  I2C SMBus subsystem. Devicetree based systems will instantiate
> +	  attached devices if the DIMMs are listed in the devicetree file.
> +
> +	  Disabling the detect function will speed up boot time and reduce
> +	  the risk of mis-detecting SPD5118 compliant devices. However, it
> +	  may result in missed DIMMs under some circumstances.
> +
> +	  If unsure, say Y.
> +
>   config SENSORS_TC74
>   	tristate "Microchip TC74"
>   	depends on I2C
> diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
> index 5cb5e52c0a38..19d203283a21 100644
> --- a/drivers/hwmon/spd5118.c
> +++ b/drivers/hwmon/spd5118.c
> @@ -313,7 +313,7 @@ static bool spd5118_vendor_valid(u8 bank, u8 id)
>   }
>
>   /* Return 0 if detection is successful, -ENODEV otherwise */
> -static int spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
> +static int __maybe_unused spd5118_detect(struct i2c_client *client, struct i2c_board_info *info)
>   {
>   	struct i2c_adapter *adapter = client->adapter;
>   	int regval;
> @@ -647,7 +647,9 @@ static struct i2c_driver spd5118_driver = {
>   	},
>   	.probe		= spd5118_probe,
>   	.id_table	= spd5118_id,
> +#ifdef CONFIG_SENSORS_SPD5118_DETECT
>   	.detect		= spd5118_detect,
> +#endif
>   	.address_list	= normal_i2c,
>   };
>

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Wolfram Sang]

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> the text "Only works for DDR, DDR2, DDR3 and DDR4 for now" should be updated too.
> With this fixed:

Yes, maybe this could be simplified to "(LP)DDR memory types"


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Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/7/24 11:00, Wolfram Sang wrote:
> 
>> the text "Only works for DDR, DDR2, DDR3 and DDR4 for now" should be updated too.
>> With this fixed:
> 
> Yes, maybe this could be simplified to "(LP)DDR memory types"
> 

I rephrased it to "Only works for (LP)DDR memory types up to DDR5".

How about "Only works on systems with 1 to 8 memory slots" ?
That isn't really correct anymore either, unless I misunderstand
the changes made in commit 8821c8376993 ("i2c: smbus: Prepare
i2c_register_spd for usage on muxed segments").

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 324 bytes --]


> > Yes, maybe this could be simplified to "(LP)DDR memory types"
> > 
> 
> I rephrased it to "Only works for (LP)DDR memory types up to DDR5".

Thanks!

> How about "Only works on systems with 1 to 8 memory slots" ?

This is a question for Heiner. I'd think it is is still correct, but I
don't know exactly.


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Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/10/24 07:52, Wolfram Sang wrote:
> 
>>> Yes, maybe this could be simplified to "(LP)DDR memory types"
>>>
>>
>> I rephrased it to "Only works for (LP)DDR memory types up to DDR5".
> 
> Thanks!
> 
>> How about "Only works on systems with 1 to 8 memory slots" ?
> 
> This is a question for Heiner. I'd think it is is still correct, but I
> don't know exactly.
> 

My interpretation was that it should work if the DIMMs are connected to
multiplexed I2C busses, but probably not if they are connected to
different adapters. The error message in that case is a bit misleading,
though, because it claims that "More than 8 memory slots on a single bus",
which isn't necessarily the case. For example, it should be perfectly valid
to have up to 24 DIMMs in this system.

i2c-0/name:SMBus PIIX4 adapter port 0 at 0b00
i2c-1/name:SMBus PIIX4 adapter port 2 at 0b00
i2c-2/name:SMBus PIIX4 adapter port 1 at 0b20

... but I guess that is a question for someone with such a system to answer.

Ultimately the handling of systems with more than 8 memory slots will need
to be updated at some point. On my systems, with 'i2c: piix4: Register SPDs'
applied, I see

i2c i2c-0: 4/4 memory slots populated (from DMI)
     [my system is running 6.6.y which still generates that message]
i2c i2c-0: Successfully instantiated SPD at 0x50
i2c i2c-0: Successfully instantiated SPD at 0x51
i2c i2c-0: Successfully instantiated SPD at 0x52
i2c i2c-0: Successfully instantiated SPD at 0x53
i2c i2c-1: 4/4 memory slots populated (from DMI)
i2c i2c-2: 4/4 memory slots populated (from DMI)

meaning the function is called for each adapter (which makes sense).
However, the code counting the DIMMs doesn't really take the adapter
into account, meaning adapters 1 and 2 are still probed even though
all DIMMs were already instantiated from adapter 0.

On a system with more than 8 DIMMs connected to different piix4 adapters
(without mux) we'd probably see something like

i2c i2c-0: More than 8 memory slots on a single bus, contact i801 maintainer ...
i2c i2c-1: More than 8 memory slots on a single bus, contact i801 maintainer ...
i2c i2c-2: More than 8 memory slots on a single bus, contact i801 maintainer ...

which wouldn't be very helpful. I think the main problem may be that
the i801 driver implements sub-adapters as muxes, but the piix4 driver
doesn't do (or need) that. The message is also i801 centric which doesn't
apply anymore after 'i2c: piix4: Register SPDs' is applied.

However, I would not want to even try changing that code without access
to a system using piix4 and supporting more than 8 memory slots.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Wolfram Sang]

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CCing Heiner...

> > > > Yes, maybe this could be simplified to "(LP)DDR memory types"
> > > > 
> > > 
> > > I rephrased it to "Only works for (LP)DDR memory types up to DDR5".
> > 
> > Thanks!
> > 
> > > How about "Only works on systems with 1 to 8 memory slots" ?
> > 
> > This is a question for Heiner. I'd think it is is still correct, but I
> > don't know exactly.
> > 
> 
> My interpretation was that it should work if the DIMMs are connected to
> multiplexed I2C busses, but probably not if they are connected to
> different adapters. The error message in that case is a bit misleading,
> though, because it claims that "More than 8 memory slots on a single bus",
> which isn't necessarily the case. For example, it should be perfectly valid
> to have up to 24 DIMMs in this system.
> 
> i2c-0/name:SMBus PIIX4 adapter port 0 at 0b00
> i2c-1/name:SMBus PIIX4 adapter port 2 at 0b00
> i2c-2/name:SMBus PIIX4 adapter port 1 at 0b20
> 
> ... but I guess that is a question for someone with such a system to answer.
> 
> Ultimately the handling of systems with more than 8 memory slots will need
> to be updated at some point. On my systems, with 'i2c: piix4: Register SPDs'
> applied, I see
> 
> i2c i2c-0: 4/4 memory slots populated (from DMI)
>     [my system is running 6.6.y which still generates that message]
> i2c i2c-0: Successfully instantiated SPD at 0x50
> i2c i2c-0: Successfully instantiated SPD at 0x51
> i2c i2c-0: Successfully instantiated SPD at 0x52
> i2c i2c-0: Successfully instantiated SPD at 0x53
> i2c i2c-1: 4/4 memory slots populated (from DMI)
> i2c i2c-2: 4/4 memory slots populated (from DMI)
> 
> meaning the function is called for each adapter (which makes sense).
> However, the code counting the DIMMs doesn't really take the adapter
> into account, meaning adapters 1 and 2 are still probed even though
> all DIMMs were already instantiated from adapter 0.
> 
> On a system with more than 8 DIMMs connected to different piix4 adapters
> (without mux) we'd probably see something like
> 
> i2c i2c-0: More than 8 memory slots on a single bus, contact i801 maintainer ...
> i2c i2c-1: More than 8 memory slots on a single bus, contact i801 maintainer ...
> i2c i2c-2: More than 8 memory slots on a single bus, contact i801 maintainer ...
> 
> which wouldn't be very helpful. I think the main problem may be that
> the i801 driver implements sub-adapters as muxes, but the piix4 driver
> doesn't do (or need) that. The message is also i801 centric which doesn't
> apply anymore after 'i2c: piix4: Register SPDs' is applied.
> 
> However, I would not want to even try changing that code without access
> to a system using piix4 and supporting more than 8 memory slots.
> 
> Thanks,
> Guenter
> 
> 

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Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 05.06.24 um 15:56 schrieb Guenter Roeck:

> On Wed, Jun 05, 2024 at 02:21:50PM +0200, Paul Menzel wrote:

>> Am 04.06.24 um 06:02 schrieb Guenter Roeck:
>>> Detect DDR5 memory and instantiate the SPD5118 driver automatically.
>>>
>>> Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
>>> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
>>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>>> ---
>>> v5: New patch
>>>
>>>    drivers/i2c/i2c-smbus.c | 4 ++++
>>>    1 file changed, 4 insertions(+)
>>>
>>> diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
>>> index 97f338b123b1..8a0dab835761 100644
>>> --- a/drivers/i2c/i2c-smbus.c
>>> +++ b/drivers/i2c/i2c-smbus.c
>>> @@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap)
>>>    	case 0x1E:	/* LPDDR4 */
>>>    		name = "ee1004";
>>>    		break;
>>> +	case 0x22:	/* DDR5 */
>>> +	case 0x23:	/* LPDDR5 */
>>> +		name = "spd5118";
>>> +		break;
>>>    	default:
>>>    		dev_info(&adap->dev,
>>>    			 "Memory type 0x%02x not supported yet, not instantiating SPD\n",
>>
>> Testing this on top of 6.10-rc2+ on a Supermicro X13SAE, Linux logs:
>>
>>      $ dmesg | grep -e "DMI:" -e "Linux version" -e i2c-0
>>      [    0.000000] Linux version 6.10.0-rc2.mx64.461-00036-g151dfab265df (pmenzel@foreveralone.molgen.mpg.de) (gcc (GCC) 12.3.0, GNU ld (GNU Binutils) 2.41) #74 SMP PREEMPT_DYNAMIC Wed Jun  5 08:24:59 CEST 2024
>>      [    0.000000] DMI: Supermicro Super Server/X13SAE, BIOS 2.0 10/17/2022
>>      [    0.000000] DMI: Memory slots populated: 4/4
>>      [    5.434488] i2c i2c-0: Successfully instantiated SPD at 0x50
>>      [    5.443848] i2c i2c-0: Successfully instantiated SPD at 0x51
>>      [    5.450033] i2c i2c-0: Successfully instantiated SPD at 0x52
>>      [    5.459378] i2c i2c-0: Successfully instantiated SPD at 0x53
>>
>> Then with `sudo modprobe at24` and `sudo modprobe ee1004`, `decode-dimms`
>> shows:
>>
> You'd actually have to load the spd5118 driver.

Indeed. I didn’t check with the last version, but using your patch set 
v5 [1] on top of Linux 6.10-rc4, it was loaded:

     $ lsmod | grep 5118
     spd5118                12288  0
     regmap_i2c             12288  1 spd5118
     $ dmesg | grep 5118
     [    6.551827] spd5118 0-0050: DDR5 temperature sensor: vendor 
0x06:0x32 revision 1.6
     [    6.562267] spd5118 0-0051: DDR5 temperature sensor: vendor 
0x06:0x32 revision 1.6
     [    6.572727] spd5118 0-0052: DDR5 temperature sensor: vendor 
0x06:0x32 revision 1.6
     [    6.575536] spd5118 0-0053: DDR5 temperature sensor: vendor 
0x06:0x32 revision 1.6

>>      $ sudo ./eeprom/decode-dimms
>>      # decode-dimms version 4.3
>>
>>      Memory Serial Presence Detect Decoder
>>      By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
>>      Jean Delvare, Trent Piepho and others
>>
>>
>>      Number of SDRAM DIMMs detected and decoded: 0
>>
>> This might be expected, and `decode-dimms` also needs to be updated.
> 
> Correct. The hack below makes it detect the DIMMs, but the data format
> is all different, so it is only really useful to validate reading
> the EEPROM (i.e., the checksum over the first 512 bytes of the eeprom
> is correct). With that patch applied, I get
> 
> Decoding EEPROM: /sys/bus/i2c/drivers/spd5118/0-0050
> Guessing DIMM is in                              bank 1
> Kernel driver used                               spd5118
> 
> ---=== SPD EEPROM Information ===---
> EEPROM CRC of bytes 0-509 48 1                   OK (0x47A2)
> # of bytes written to SDRAM EEPROM               1024
> Total number of bytes in EEPROM                  1024
> Fundamental Memory type                          DDR5 SDRAM
> 
> ---=== Manufacturing Information ===---
> Manufacturer                                     Invalid
> Custom Manufacturer Data                         00 00 00 00 00 88 13 ("???????")
> Manufacturing Location Code                      0x08
> Part Number                                      Undefined
> Revision Code                                    0x4C1D
> Manufacturing Date                               0x0C00
> 
> and so on.

> ---
> diff --git a/eeprom/decode-dimms b/eeprom/decode-dimms
> index 787b6f5..64b6e81 100755
> --- a/eeprom/decode-dimms
> +++ b/eeprom/decode-dimms
> @@ -2407,7 +2407,12 @@ sub spd_sizes($)
>   	my $bytes = shift;
>   	my $type = $bytes->[2];
>   
> -	if ($type == 12 || $type == 14 || $type == 16 || $type == 17) {
> +	if ($type == 18 || $type == 19 || $type == 20 || $type == 21) {
> +		# DDR5
> +		my $spd_len = 256 * ((($bytes->[0] >> 4) & 7) + 1);
> +		my $used = $spd_len;
> +		return ($spd_len, $used);
> +	} elsif ($type == 12 || $type == 14 || $type == 16 || $type == 17) {
>   		# DDR4
>   		my $spd_len = 256 * (($bytes->[0] >> 4) & 7);
>   		my $used = 128 * ($bytes->[0] & 15);
> @@ -2516,11 +2521,17 @@ sub calculate_crc($$$)
>   sub check_crc($)
>   {
>   	my $bytes = shift;
> +	my $is_ddr5 = ($bytes->[0] & 0x70) == 0x30;
>   	my $crc_cover = $bytes->[0] & 0x80 ? 116 : 125;
> +	my $crc_start = 126;
> +	if ($is_ddr5) {
> +	    $crc_cover = 509;
> +	    $crc_start = 510;
> +	}
>   	my $crc = calculate_crc($bytes, 0, $crc_cover + 1);
>   
> -	my $dimm_crc = ($bytes->[127] << 8) | $bytes->[126];
> -	return ("EEPROM CRC of bytes 0-$crc_cover",
> +	my $dimm_crc = ($bytes->[$crc_start + 1] << 8) | $bytes->[$crc_start];
> +	return ("EEPROM CRC of bytes 0-$crc_cover $bytes->[0] $is_ddr5",
>   		($dimm_crc == $crc) ? 1 : 0,
>   		sprintf("0x%04X", $dimm_crc),
>   		sprintf("0x%04X", $crc));
> @@ -2622,6 +2633,7 @@ sub get_dimm_list
>   	if ($use_sysfs) {
>   		@drivers = ('eeprom',
>   			    'at24',
> +			    'spd5118',
>   			    'ee1004');	# DDR4
>   	} else {
>   		@drivers = ('eeprom');
> @@ -2640,14 +2652,13 @@ sub get_dimm_list
>   				# We look for I2C devices like 0-0050 or 2-0051
>   				next unless $file =~ /^\d+-[\da-f]+$/i;
>   				next unless -d "$dir/$file";
> -
>   				# Device name must be eeprom (driver eeprom)
>   				# spd (driver at24) or ee1004 (driver ee1004)
>   				my $attr = sysfs_device_attribute("$dir/$file", "name");
>   				next unless defined $attr &&
>   					    ($attr eq "eeprom" ||
>   					     $attr eq "spd" ||
> -					     $attr eq "ee1004");	# DDR4
> +					     $attr eq "spd5118" || $attr eq "ee1004");	# DDR4
>   			} else {
>   				next unless $file =~ /^eeprom-/;
>   			}
> @@ -2681,7 +2692,7 @@ sub get_dimm_list
>   @dimm = get_dimm_list() unless $use_hexdump;
>   
>   for my $i (0 .. $#dimm) {
> -	my @bytes = readspd(0, 128, $dimm[$i]->{file});
> +	my @bytes = readspd(0, 512, $dimm[$i]->{file});
>   	$dimm[$i]->{bytes} = \@bytes;
>   	$dimm[$i]->{is_rambus} = $bytes[0] < 4;		# Simple heuristic
>   	if ($dimm[$i]->{is_rambus} || $bytes[2] < 9) {

I applied your patch

     $ git log --oneline --no-decorate -2
     00058a6 eeprom: Add basic spd5118 support
     a0e5865 i2cdetect: only use "newer" I2C_FUNC_* flags if they exist

but reading eeprom fails:

     $ sudo ./eeprom/decode-dimms
     Cannot read /sys/bus/i2c/drivers/spd5118/0-0050/eeprom at 
./eeprom/decode-dimms line 2465.


Kind regards,

Paul


[1]: 
https://lore.kernel.org/all/20240610144103.1970359-1-linux@roeck-us.net/


PS:

$ ls -lR /sys/bus/i2c/drivers/spd5118/
/sys/bus/i2c/drivers/spd5118/:
total 0
lrwxrwxrwx 1 root root    0 Jun 17 15:31 0-0050 -> 
../../../../devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050
lrwxrwxrwx 1 root root    0 Jun 17 15:31 0-0051 -> 
../../../../devices/pci0000:00/0000:00:1f.4/i2c-0/0-0051
lrwxrwxrwx 1 root root    0 Jun 17 15:31 0-0052 -> 
../../../../devices/pci0000:00/0000:00:1f.4/i2c-0/0-0052
lrwxrwxrwx 1 root root    0 Jun 17 15:31 0-0053 -> 
../../../../devices/pci0000:00/0000:00:1f.4/i2c-0/0-0053
--w------- 1 root root 4096 Jun 17 15:31 bind
lrwxrwxrwx 1 root root    0 Jun 17 15:31 module -> 
../../../../module/spd5118
--w------- 1 root root 4096 Jun 17 15:25 uevent
--w------- 1 root root 4096 Jun 17 15:31 unbind
$ ls -lR /sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050
'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050':
total 0
drwxr-xr-x 3 root root    0 Jun 17 15:25 0-0050
lrwxrwxrwx 1 root root    0 Jun 17 15:25 driver -> 
../../../../../bus/i2c/drivers/spd5118
-r--r--r-- 1 root root 1024 Jun 17 15:31 eeprom
drwxr-xr-x 3 root root    0 Jun 17 15:25 hwmon
-r--r--r-- 1 root root 4096 Jun 17 16:39 modalias
-r--r--r-- 1 root root 4096 Jun 17 15:31 name
drwxr-xr-x 2 root root    0 Jun 17 16:39 power
lrwxrwxrwx 1 root root    0 Jun 17 15:25 subsystem -> ../../../../../bus/i2c
-rw-r--r-- 1 root root 4096 Jun 17 15:25 uevent

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050':
total 0
-r--r--r-- 1 root root 1024 Jun 17 16:39 nvmem
drwxr-xr-x 2 root root    0 Jun 17 16:39 power
lrwxrwxrwx 1 root root    0 Jun 17 16:39 subsystem -> 
../../../../../../bus/nvmem
-r--r--r-- 1 root root 4096 Jun 17 16:39 type
-rw-r--r-- 1 root root 4096 Jun 17 15:25 uevent

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power':
total 0
-rw-r--r-- 1 root root 4096 Jun 17 16:39 autosuspend_delay_ms
-rw-r--r-- 1 root root 4096 Jun 17 16:39 control
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_active_time
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_status
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_suspended_time

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/hwmon':
total 0
drwxr-xr-x 3 root root 0 Jun 17 15:25 hwmon1

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/hwmon/hwmon1':
total 0
lrwxrwxrwx 1 root root    0 Jun 17 15:35 device -> ../../../0-0050
-r--r--r-- 1 root root 4096 Jun 17 15:35 name
drwxr-xr-x 2 root root    0 Jun 17 15:35 power
lrwxrwxrwx 1 root root    0 Jun 17 15:35 subsystem -> 
../../../../../../../class/hwmon
-rw-r--r-- 1 root root 4096 Jun 17 15:35 temp1_crit
-r--r--r-- 1 root root 4096 Jun 17 15:35 temp1_crit_alarm
-rw-r--r-- 1 root root 4096 Jun 17 15:35 temp1_enable
-r--r--r-- 1 root root 4096 Jun 17 15:35 temp1_input
-rw-r--r-- 1 root root 4096 Jun 17 15:35 temp1_lcrit
-r--r--r-- 1 root root 4096 Jun 17 15:35 temp1_lcrit_alarm
-rw-r--r-- 1 root root 4096 Jun 17 15:35 temp1_max
-r--r--r-- 1 root root 4096 Jun 17 15:35 temp1_max_alarm
-rw-r--r-- 1 root root 4096 Jun 17 15:35 temp1_min
-r--r--r-- 1 root root 4096 Jun 17 15:35 temp1_min_alarm
-rw-r--r-- 1 root root 4096 Jun 17 15:25 uevent

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/hwmon/hwmon1/power':
total 0
-rw-r--r-- 1 root root 4096 Jun 17 16:39 autosuspend_delay_ms
-rw-r--r-- 1 root root 4096 Jun 17 16:39 control
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_active_time
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_status
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_suspended_time

'/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power':
total 0
-rw-r--r-- 1 root root 4096 Jun 17 16:39 autosuspend_delay_ms
-rw-r--r-- 1 root root 4096 Jun 17 16:39 control
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_active_time
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_status
-r--r--r-- 1 root root 4096 Jun 17 16:39 runtime_suspended_time

$ sudo grep -R . /sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050 | 
head -1000
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power/autosuspend_delay_ms: 
Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/uevent: 
Permission denied
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/uevent:DRIVER=spd5118
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/uevent:MODALIAS=i2c:spd5118
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power/runtime_status:unsupported
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/power/autosuspend_delay_ms: 
Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/drivers_autoprobe:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/power/runtime_status:unsupported
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0052/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0050: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0053/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/subsystem: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/type:EEPROM

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/0-0051/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/power/autosuspend_delay_ms: 
Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/subsystem: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/power/runtime_status:unsupported

/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/type:Unknown
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/devices/cmos_nvram0/nvmem: 
binary file matches
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/subsystem/drivers_probe: 
Permission denied
grep: /sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/0-0050/nvmem: No 
such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/uevent: 
Permission denied
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0052: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/drivers_autoprobe:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0050/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0053/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/type:EEPROM
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/0-0051/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/type:Unknown
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/devices/cmos_nvram0/nvmem: 
binary file matches
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/subsystem/drivers_probe: 
Permission denied
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/0-0052/nvmem: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/uevent:DRIVER=spd5118
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/uevent:MODALIAS=i2c:spd5118
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/driver: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/power/control:auto
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/eeprom: 
No such device or address
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/uevent: 
Permission denied
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/0-0052: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/drivers_autoprobe:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-3: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-1/device: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:DRIVER=i915
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:PCI_CLASS=30000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:PCI_ID=8086:A780
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:PCI_SUBSYS_ID=15D9:1C47
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:PCI_SLOT_NAME=0000:00:02.0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/uevent:MODALIAS=pci:v00008086d0000A780sv000015D9sd00001C47bc03sc00i00
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/sriov_vf_total_msix:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/sriov_stride:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-1/delete_device: 
Permission denied
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-1/subsystem: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-1/new_device: 
Permission denied
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/i2c-1/name:i915 
gmbus dpa
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/sriov_offset:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/power_state:D0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/uevent:MAJOR=29
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/uevent:MINOR=0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/uevent:DEVNAME=fb0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/rotate:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver
/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/device: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/dev:29:0

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fb0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/stride:5120
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/virtual_size:1280,720
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/pan:0,0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/bits_per_pixel:32

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/cursor_blink:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/rotate:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/power/control:auto
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/subsystem/fbcon/rotate_all: 
Permission denied
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/rom: 
Invalid 
argument/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/state:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/modes:U:1280x720p-0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/graphics/fb0/name:i915drmfb
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/sriov_drivers_autoprobe:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/broken_parity_status:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/sriov_totalvfs:7
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/subsystem_device:0x1c47

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/iommu_group/devices/0000:00:02.0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/dma_mask_bits:39
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/vendor:0x8086
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/iommu_group/type:DMA-FQ
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/iommu_group/reserved_regions:0x000000007c000000 
0x00000000803fffff direct-relaxable
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/iommu_group/reserved_regions:0x00000000fee00000 
0x00000000feefffff msi
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/local_cpus:ffffffff
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/uevent:DRIVER=video
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/uevent:MODALIAS=acpi:LNXVIDEO:
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:
00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/uevent: 
Permission 
denied/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/adr:0x0000001f
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/path:\_SB_.PC00.GFX0.DD2F

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/drivers_autoprobe:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/firmware_node: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/location:0x00000000
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/power/runtime_active_time:4563704
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/power/runtime_status:active
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/power/autosuspend_delay_ms: 
Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/over_current_count:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/state:not 
attached
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/early_stop:no
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/waiting_for_supplier:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/connect_type:unknown
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/physical_node/quirks:00000000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/adr:0x00000010
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/device:6b/path:\_SB_.PC00.XHCI.RHUB.USR2
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/uevent:MODALIAS=acpi:ACPI0007:
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/device: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/power/control:auto
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/type:Processor
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/max_state:3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/uevent:MODALIAS=acpi:ACPI0007:
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/thermal_cooling: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/above:9366
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/time:4539433544
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/residency:2096
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/latency:1048
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/usage:59777
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/desc:ACPI 
FFH MWAIT 0x60
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/below:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/name:C3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state3/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/above:23762
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/time:2634180
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/residency:2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/latency:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/usage:129756
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/desc:ACPI 
FFH MWAIT 0x0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/below:1419
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state1/name:C1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/above:6378
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/time:9805813
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/residency:254
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/latency:127
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/usage:17479
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/desc:ACPI 
FFH MWAIT 0x21
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/below:3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/name:C2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state2/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/above:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/time:51869
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/power:4294967295
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/residency:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/latency:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/usage:9906
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/desc:CPUIDLE 
CORE POLL IDLE
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/below:1319
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/cpuidle/state0/name:POLL
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/uevent:DRIVER=processor
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/uevent:MODALIAS=cpu:type:x86,ven0000fam0006mod00B7:feature:,0000,0001,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0015,0016,0017,0018,0019,001A,001B,001C,001D,001F,002B,0034,003A,003B,003D,0068,006A,006B,006C,006D,006F,0070,0074,0075,0076,0078,0079,007C,007F,0080,0081,0082,0083,0084,0085,0086,0087,0088,0089,008B,008C,008D,008E,008F,0093,0094,0095,0096,0097,0098,0099,009A,009B,009C,009D,009E,00C0,00C5,00C8,00E1,00E3,00EA,00F0,00F1,00F3,00F5,00F9,00FA,00FB,00FE,00FF,0100,0101,0102,0103,0111,0120,0121,0123,0125,0126,0127,0128,0129,012A,012D,0132,0133,0134,0137,0138,0139,013D,0140,0141,0142,0143,0164,0165,0166,016B,0171,017B,0184,018B,0196,01C0,01C1,01C2,01C4,01C5,01C6,01C7,01C8,01C9,01CA,01CB,01CE,01CF,01D0,01D1,01D2,01D3,01D4,01D6,01D7,01F9,0202,0203,0204,0205,0207,0208,0209,020A,0216,0217,021B,021C,021F,0244,024A,024E,024F,0252,0253,0254,025A,025B,025C,025D,025E,025F,0282,02A2,02A3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/hotplug/target:236
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/hotplug/state:236
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/hotplug/fail:-1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/core_throttle_count:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/core_throttle_max_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/core_throttle_total_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/package_throttle_max_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/package_throttle_total_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/thermal_throttle/package_throttle_count:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/crasgrep: 
h_notes_size:368
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/firmware_node: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/node0: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/uevent: 
Permission denied
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/phys_index:00000020
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory32: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/drivers_autoprobe:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/node0: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/phys_index:0000003c
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory60/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/phys_index:00000003
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory3/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/phys_index:00000016
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory22/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/phys_index:00000032
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory50/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/phys_index:0000000c
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory12/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/phys_index:00000028
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory40/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/phys_index:0000001e
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory30/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/phys_index:0000003b
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory59/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/phys_index:00000014
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory20/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/phys_index:00000031
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory49/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/phys_index:0000000a
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory10/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/phys_index:00000027
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory39/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/phys_index:0000001d
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory29/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/phys_index:00000039
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory57/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/phys_index:00000013
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory19/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/phys_index:0000002f
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory47/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/phys_index:00000025
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory37/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/phys_index:00000008
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory8/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/phys_index:0000001b
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory27/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/phys_index:00000037
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory55/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/phys_index:00000011
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory17/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/phys_index:0000002d
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory45/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/phys_index:00000023
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory35/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/phys_index:0000003f
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory63/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/phys_index:00000006
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory6/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/phys_index:00000019
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory25/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/phys_index:00000035
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory53/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/phys_index:0000000f
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory15/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/phys_index:0000002b
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory43/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/phys_index:00000021
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory33/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/phys_index:0000003d
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory61/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/phys_index:00000004
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory4/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/phys_index:00000017
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory23/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/phys_index:00000033
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory51/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/phys_index:0000000d
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory13/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/phys_index:00000029
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory41/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/phys_index:0000001f
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory31/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/phys_index:00000002
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory2/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/power/runtime_status:unsupported
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/phys_index:00000015
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory21/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/phys_index:0000000b
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory11/removable:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/node0: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/phys_index:0000003a
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory58/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/phys_index:00000000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/valid_zones:none
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory0/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/phys_index:00000030
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory48/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/phys_index:00000026
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory38/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/phys_index:00000009
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory9/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/phys_index:0000001c
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory28/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/phys_index:00000038
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory56/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/phys_index:00000012
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory18/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/phys_index:0000002e
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory46/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/phys_index:00000024
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory36/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/phys_index:00000040
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory64/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/phys_index:00000007
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory7/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/phys_index:0000001a
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory26/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/phys_index:00000036
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory54/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/phys_index:00000010
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory16/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/phys_index:0000002c
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory44/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/phys_index:00000022
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory34/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/phys_index:0000003e
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/node0: 
warning: recursive directory 
loop/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory62/removable:1

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/phys_index:00000005
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory5/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/phys_index:00000018
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory24/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/phys_index:00000034
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory52/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/power/autosuspend_delay_ms/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/power/runtime_status:unsupported
: Input/output error
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/phys_index:0000000e
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/node0: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory14/removable:1
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/power/autosuspend_delay_ms: 
Input/output 
error/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/power/runtime_status:unsupported

grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/subsystem: 
warning: recursive directory loop
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/phys_device:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/phys_index:0000002a
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/valid_zones:Normal
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/drivers_probe/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/subsystem/devices/memory42/removable:1
: Permission denied
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/state:online
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/memory32/removable:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/above:93438
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/time:4146824781
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/residency:2096
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/latency:1048
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/usage:323351
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/desc:ACPI 
FFH MWAIT 0x60
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/below:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/name:C3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state3/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/above:2123
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/time:12585020
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/residency:2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/latency:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/usage:231154
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/desc:ACPI 
FFH MWAIT 0x0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/below:447
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state1/name:C1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/above:17457
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/time:368439660
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/residency:254
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/latency:127
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/usage:409671
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/desc:ACPI 
FFH MWAIT 0x21
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/below:5
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/name:C2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state2/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/above:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/time:347745
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/power:4294967295
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/residency:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/latency:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/usage:5813
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/desc:CPUIDLE 
CORE POLL IDLE
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/below:5773
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/cpuidle/state0/name:POLL
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/uevent:DRIVER=processor
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/uevent:MODALIAS=cpu:type:x86,ven0000fam0006mod00B7:feature:,0000,0001,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0015,0016,0017,0018,0019,001A,001B,001C,001D,001F,002B,0034,003A,003B,003D,0068,006A,006B,006C,006D,006F,0070,0074,0075,0076,0078,0079,007C,007F,0080,0081,0082,0083,0084,0085,0086,0087,0088,0089,008B,008C,008D,008E,008F,0093,0094,0095,0096,0097,0098,0099,009A,009B,009C,009D,009E,00C0,00C5,00C8,00E1,00E3,00EA,00F0,00F1,00F3,00F5,00F9,00FA,00FB,00FE,00FF,0100,0101,0102,0103,0111,0120,0121,0123,0125,0126,0127,0128,0129,012A,012D,0132,0133,0134,0137,0138,0139,013D,0140,0141,0142,0143,0164,0165,0166,016B,0171,017B,0184,018B,0196,01C0,01C1,01C2,01C4,01C5,01C6,01C7,01C8,01C9,01CA,01CB,01CE,01CF,01D0,01D1,01D2,01D3,01D4,01D6,01D7,01F9,0202,0203,0204,0205,0207,0208,0209,020A,0216,0217,021B,021C,021F,0244,024A,024E,024F,0252,0253,0254,025A,025B,025C,025D,025E,025F,0282,02A2,02A3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/hotplug/target:236
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/hotplug/state:236
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/hotplug/fail:-1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/core_throttle_count:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/core_throttle_max_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-00grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/firmware_node: 
warning: recursive directory loop
52/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/core_throttle_total_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/package_throttle_max_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/package_throttle_total_time_ms:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/thermal_throttle/package_throttle_count:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/crash_notes_size:368
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/node0: 
warning: recursive directory loop
grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/autosuspend_delay_ms: 
Input/output error
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/runtime_active_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/energy_perf_bias:6
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/pm_qos_resume_latency_us:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/runtime_status:unsupported
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/runtime_suspended_time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/power/control:auto
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/microcode/processor_flags:0x2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/microcode/version:0x119
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/online:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/cluster_cpus:00f00000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/die_id:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/cluster_cpus_list:20-23
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/physical_package_id:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/core_cpus_list:21
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/die_cpus_list:0-31
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/core_siblings:ffffffff
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/cluster_id:72
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/core_siblings_list:0-31
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/package_cpus:ffffffff
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/package_cpus_list:0-31
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/grep: 
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu21: 
warning: recursive directory loop
subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/die_cpus:ffffffff
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/thread_siblings_list:21
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/core_id:37
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/core_cpus:00200000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/topology/thread_siblings:00200000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/feedback_ctrs:ref:202133099880 
del:64086048649
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/lowest_nonlinear_perf:15
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/highest_perf:43
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/nominal_freq:3000
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/lowest_freq:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/nominal_perf:22
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/lowest_perf:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/grep: 
devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/reference_perf:22
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/uevent/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/acpi_cppc/wraparound_time:18446744073709551615
: Permission denied
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/above:12579
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/time:4506539525
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/residency:2096
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/latency:1048
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/usage:13299
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/desc:ACPI 
FFH MWAIT 0x60
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/below:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/name:C3
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state3/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/above:5213
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/time:327152
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/residency:2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/latency:1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/usage:10185
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/desc:ACPI 
FFH MWAIT 0x0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/below:278
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state1/name:C1
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/above:134
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/time:617470
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/rejected:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/power:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/residency:254
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/latency:127
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/usage:766
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/desc:ACPI 
FFH MWAIT 0x21
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/below:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/default_status:enabled
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/name:C2
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/s2idle/time:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state2/s2idle/usage:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state0/disable:0
/sys/devices/pci0000:00/0000:00:1f.4/i2c-0/0-0050/driver/0-0052/subsystem/devices/i2c-3/device/firmware_node/device:54/subsystem/devices/ACPI0007:15/thermal_cooling/subsystem/cooling_device13/device/physical_node/node0/cpu21/driver/cpu11/cpuidle/state0/above:0

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

Hi Paul,

On Mon, Jun 17, 2024 at 04:42:47PM +0200, Paul Menzel wrote:
[ ... ]
> 
> I applied your patch
> 
>     $ git log --oneline --no-decorate -2
>     00058a6 eeprom: Add basic spd5118 support
>     a0e5865 i2cdetect: only use "newer" I2C_FUNC_* flags if they exist
> 
> but reading eeprom fails:
> 
>     $ sudo ./eeprom/decode-dimms

decode-dimms does not need sudo, but that should not make a difference.

>     Cannot read /sys/bus/i2c/drivers/spd5118/0-0050/eeprom at
> ./eeprom/decode-dimms line 2465.
> 
Well, it _is_ a hack ;-), but that specific operation should not fail.

Please try the following:

ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
sudo i2cdump -y -f 0 0x50

All those should work, and the size of /tmp/eeprom should be
1024 bytes. The output of i2cdump should start with something like

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 07 ff 7f 00 00    Q???2?2......?..
                                     ^^

and with

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 7f 00 00    Q???2?2......?..
                                     ^^

after executing the "sensors" command.

Other than that, I can see that your system is an Intel system,
meaning the i2c controller would be i801, not piix4. I wonder
if that makes a difference. Has anyone else seeing this tested
eeprom access with i801 (or any other controller besides piix4),
by any chance ?

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Thank you for your support.


Am 17.06.24 um 17:49 schrieb Guenter Roeck:

> On Mon, Jun 17, 2024 at 04:42:47PM +0200, Paul Menzel wrote:
> [ ... ]
>>
>> I applied your patch
>>
>>      $ git log --oneline --no-decorate -2
>>      00058a6 eeprom: Add basic spd5118 support
>>      a0e5865 i2cdetect: only use "newer" I2C_FUNC_* flags if they exist
>>
>> but reading eeprom fails:
>>
>>      $ sudo ./eeprom/decode-dimms
> 
> decode-dimms does not need sudo, but that should not make a difference.
> 
>>      Cannot read /sys/bus/i2c/drivers/spd5118/0-0050/eeprom at ./eeprom/decode-dimms line 2465.
>>
> Well, it _is_ a hack ;-), but that specific operation should not fail.
> 
> Please try the following:
> 
> ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
> cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
> od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom

     $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
     -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers 
/spd5118/0-0050/eeprom
     $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
     cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No 
such device or address
     $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
     od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such 
device or address
     0000000

> sudo i2cdump -y -f 0 0x50

     $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
     No size specified (using byte-data access)
     Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such 
file or directory

> All those should work, and the size of /tmp/eeprom should be
> 1024 bytes. The output of i2cdump should start with something like
> 
>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
> 00: 51 18 0a 86 32 03 32 00 00 00 00 07 ff 7f 00 00    Q???2?2......?..
>                                       ^^
> 
> and with
> 
>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
> 00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 7f 00 00    Q???2?2......?..
>                                       ^^
> 
> after executing the "sensors" command.

Hopefully, I didn’t do something silly, that it does not work on my 
system yet. `sensors` is able to read stuff:

```
$ sensors
spd5118-i2c-0-53
Adapter: SMBus I801 adapter at efa0
temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

spd5118-i2c-0-51
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 4:        +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 8:        +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 12:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 16:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 20:       +26.0°C  (high = +80.0°C, crit = +100.0°C)
Core 24:       +24.0°C  (high = +80.0°C, crit = +100.0°C)
Core 28:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 32:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 33:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 34:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 35:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 36:       +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 37:       +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 38:       +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 39:       +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 40:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 41:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 42:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 43:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 44:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 45:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 46:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 47:       +30.0°C  (high = +80.0°C, crit = +100.0°C)

spd5118-i2c-0-52
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

spd5118-i2c-0-50
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)
```

> Other than that, I can see that your system is an Intel system,
> meaning the i2c controller would be i801, not piix4. I wonder
> if that makes a difference. Has anyone else seeing this tested
> eeprom access with i801 (or any other controller besides piix4),
> by any chance?

Sorry, I only have Intel systems with DDR5 RAM at disposal.


Kind regards,

Paul


PS:

```
$ lsmod | grep i2c
i2c_algo_bit           12288  1 i915
regmap_i2c             12288  1 spd5118
$ grep I2C /boot/config-6.10.0-rc4.mx64.461-00047-g801b6aad6fa7
CONFIG_REGMAP_I2C=m
# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_MOUSE_ELAN_I2C is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_TCG_TIS_I2C is not set
CONFIG_TCG_TIS_I2C_CR50=m
CONFIG_TCG_TIS_I2C_ATMEL=m
CONFIG_TCG_TIS_I2C_INFINEON=m
CONFIG_TCG_TIS_I2C_NUVOTON=m
CONFIG_TCG_TIS_ST33ZP24_I2C=m
# I2C support
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_MUX=y
# Multiplexer I2C Chip support
# CONFIG_I2C_MUX_GPIO is not set
# CONFIG_I2C_MUX_LTC4306 is not set
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_REG is not set
# CONFIG_I2C_MUX_MLXCPLD is not set
# end of Multiplexer I2C Chip support
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_SMBUS=y
CONFIG_I2C_ALGOBIT=m
# I2C Hardware Bus support
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
# CONFIG_I2C_AMD_MP2 is not set
CONFIG_I2C_I801=y
CONFIG_I2C_ISCH=m
# CONFIG_I2C_ISMT is not set
CONFIG_I2C_PIIX4=m
CONFIG_I2C_NFORCE2=m
CONFIG_I2C_NFORCE2_S4985=m
# CONFIG_I2C_NVIDIA_GPU is not set
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m
# CONFIG_I2C_ZHAOXIN is not set
# CONFIG_I2C_SCMI is not set
# I2C system bus drivers (mostly embedded / system-on-chip)
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PCI is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set
# External I2C/SMBus adapter drivers
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_CP2615 is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PCI1XXXX is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set
# Other I2C/SMBus bus drivers
# CONFIG_I2C_MLXCPLD is not set
# CONFIG_I2C_VIRTIO is not set
# end of I2C Hardware Bus support
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support
# I2C GPIO expanders
# end of I2C GPIO expanders
# CONFIG_SENSORS_LTC2947_I2C is not set
# CONFIG_SENSORS_NCT6775_I2C is not set
# CONFIG_SENSORS_OCC_P8_I2C is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_CS42L43_I2C is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS6594_I2C is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_ATC260X_I2C is not set
CONFIG_VIDEO_V4L2_I2C=y
# audio, video and radio I2C drivers auto-selected by 'Autoselect 
ancillary drivers'
# I2C encoder or helper chips
CONFIG_DRM_I2C_CH7006=m
CONFIG_DRM_I2C_SIL164=m
# CONFIG_DRM_I2C_NXP_TDA998X is not set
# CONFIG_DRM_I2C_NXP_TDA9950 is not set
# end of I2C encoder or helper chips
CONFIG_I2C_HID=y
# CONFIG_I2C_HID_ACPI is not set
# CONFIG_I2C_HID_OF is not set
# I2C RTC drivers
CONFIG_RTC_I2C_AND_SPI=y
# SPI and I2C RTC drivers
```

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

Hi Paul,

On 6/18/24 03:25, Paul Menzel wrote:
[ ... ]
> 
>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>      -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers /spd5118/0-0050/eeprom
>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address

That suggests that the i801 driver got an error when trying some chip operation.
Unfortunately I have no idea what that error or the failed operation might be.

>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>      0000000
> 
>> sudo i2cdump -y -f 0 0x50
> 
>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>      No size specified (using byte-data access)
>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
> 
This should work after you load the "i2c-dev" module.

If you get it to work, please provide the output. Maybe it helps tracking down
the problem.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 18.06.24 um 15:32 schrieb Guenter Roeck:

> On 6/18/24 03:25, Paul Menzel wrote:
> [ ... ]
>>
>>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>      -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
> 
> That suggests that the i801 driver got an error when trying some chip 
> operation.
> Unfortunately I have no idea what that error or the failed operation 
> might be.
> 
>>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>>      0000000
>>
>>> sudo i2cdump -y -f 0 0x50
>>
>>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>      No size specified (using byte-data access)
>>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
>>
> This should work after you load the "i2c-dev" module.

Silly me. Thank you.

> If you get it to work, please provide the output. Maybe it helps 
> tracking down the problem.

```
$ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
No size specified (using byte-data access)
      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
```

So (00,b) = 0x00 opposed to 0x07 in your example output.

     $ sensors
     […]

Then there is no change:

```
$ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
No size specified (using byte-data access)
      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
```


Kind regards,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/18/24 06:51, Paul Menzel wrote:
> Dear Guenter,
> 
> 
> Am 18.06.24 um 15:32 schrieb Guenter Roeck:
> 
>> On 6/18/24 03:25, Paul Menzel wrote:
>> [ ... ]
>>>
>>>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>      -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>>>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
>>
>> That suggests that the i801 driver got an error when trying some chip operation.
>> Unfortunately I have no idea what that error or the failed operation might be.
>>
>>>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>>>      0000000
>>>
>>>> sudo i2cdump -y -f 0 0x50
>>>
>>>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>>      No size specified (using byte-data access)
>>>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
>>>
>> This should work after you load the "i2c-dev" module.
> 
> Silly me. Thank you.
> 
>> If you get it to work, please provide the output. Maybe it helps tracking down the problem.
> 
> ```
> $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
> No size specified (using byte-data access)
>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
> 00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
> 10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
> 20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
> 30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
> 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> 80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
> 90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
> a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
> d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> ```
> 
> So (00,b) = 0x00 opposed to 0x07 in your example output.
> 

Yes, that assumed that reading the nvram/eeprom succeeded, which it didn't.
The value might also be 7 directly after booting and before loading
the spd5118 driver.

Anyway, it almost looks like setting the page doesn't work, or maybe write
operations in general.

Can you try the following ?

dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=64 bs=1

and

dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=1 bs=64

That should only try to read from page 0.

Also, please try to set a temperature limit, either temp1_max
or temp1_crit. Setting temp1_max to, say, 56000, or temp1_crit
to 84000 should do.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 18.06.24 um 16:23 schrieb Guenter Roeck:
> On 6/18/24 06:51, Paul Menzel wrote:

>> Am 18.06.24 um 15:32 schrieb Guenter Roeck:
>>
>>> On 6/18/24 03:25, Paul Menzel wrote:
>>> [ ... ]
>>>>
>>>>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>      -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>>>>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
>>>
>>> That suggests that the i801 driver got an error when trying some chip 
>>> operation.
>>> Unfortunately I have no idea what that error or the failed operation 
>>> might be.
>>>
>>>>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>>>>      0000000
>>>>
>>>>> sudo i2cdump -y -f 0 0x50
>>>>
>>>>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>>>      No size specified (using byte-data access)
>>>>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
>>>>
>>> This should work after you load the "i2c-dev" module.
>>
>> Silly me. Thank you.
>>
>>> If you get it to work, please provide the output. Maybe it helps 
>>> tracking down the problem.
>>
>> ```
>> $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>> No size specified (using byte-data access)
>>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
>> 00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
>> 20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
>> 30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
>> 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> 80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
>> 90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
>> a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
>> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
>> d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
>> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>> ```
>>
>> So (00,b) = 0x00 opposed to 0x07 in your example output.
>>
> 
> Yes, that assumed that reading the nvram/eeprom succeeded, which it didn't.
> The value might also be 7 directly after booting and before loading
> the spd5118 driver.
> 
> Anyway, it almost looks like setting the page doesn't work, or maybe write
> operations in general.
> 
> Can you try the following ?
> 
> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=64 
> bs=1
> 
> and
> 
> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=1 
> bs=64
> 
> That should only try to read from page 0.

     $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom 
of=/tmp/eeprom count=64 bs=1
     64+0 records in
     64+0 records out
     64 bytes copied, 0.046002 s, 1.4 kB/s
     $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom 
of=/tmp/eeprom count=1 bs=64
     1+0 records in
     1+0 records out
     64 bytes copied, 0.000215414 s, 297 kB/s

> Also, please try to set a temperature limit, either temp1_max
> or temp1_crit. Setting temp1_max to, say, 56000, or temp1_crit
> to 84000 should do.

I did

     $ tail -3 /etc/sensors3.conf
     chip "spd5118-*"
         set temp1_max 56000
         set temp1_crit 84000

but it stays with the defaults:

```
$ sensors
spd5118-i2c-0-53
Adapter: SMBus I801 adapter at efa0
temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

spd5118-i2c-0-51
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 4:        +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 8:        +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 12:       +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 16:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 20:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 24:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 28:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 32:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 33:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 34:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 35:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 36:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 37:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 38:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 39:       +28.0°C  (high = +80.0°C, crit = +100.0°C)
Core 40:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 41:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 42:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 43:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 44:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 45:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 46:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 47:       +30.0°C  (high = +80.0°C, crit = +100.0°C)

spd5118-i2c-0-52
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

spd5118-i2c-0-50
Adapter: SMBus I801 adapter at efa0
temp1:        +21.5°C  (low  =  +0.0°C, high = +55.0°C)
                        (crit low =  +0.0°C, crit = +85.0°C)

```

Sorry, if I did something wrong.


Kind regards,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

Hi Paul,

On 6/18/24 07:59, Paul Menzel wrote:
[ ... ]

> I did
> 
>      $ tail -3 /etc/sensors3.conf
>      chip "spd5118-*"
>          set temp1_max 56000
>          set temp1_crit 84000
> 
> but it stays with the defaults:
> 
> ```
> $ sensors
> spd5118-i2c-0-53
> Adapter: SMBus I801 adapter at efa0
> temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
>                         (crit low =  +0.0°C, crit = +85.0°C)
> 

You'd have to write directly into the attribute files.
For example, if you have

$ grep . /sys/class/hwmon/*/name
/sys/class/hwmon/hwmon0/name:nvme
/sys/class/hwmon/hwmon1/name:nct6687
/sys/class/hwmon/hwmon2/name:k10temp
/sys/class/hwmon/hwmon3/name:spd5118
/sys/class/hwmon/hwmon4/name:spd5118
/sys/class/hwmon/hwmon5/name:spd5118
/sys/class/hwmon/hwmon6/name:spd5118
/sys/class/hwmon/hwmon7/name:mt7921_phy0
/sys/class/hwmon/hwmon8/name:amdgpu

you could run

sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/18/24 07:59, Paul Menzel wrote:
> Dear Guenter,
> 
> 
> Am 18.06.24 um 16:23 schrieb Guenter Roeck:
>> On 6/18/24 06:51, Paul Menzel wrote:
> 
>>> Am 18.06.24 um 15:32 schrieb Guenter Roeck:
>>>
>>>> On 6/18/24 03:25, Paul Menzel wrote:
>>>> [ ... ]
>>>>>
>>>>>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>      -r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>>>>>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
>>>>
>>>> That suggests that the i801 driver got an error when trying some chip operation.
>>>> Unfortunately I have no idea what that error or the failed operation might be.
>>>>
>>>>>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>>>>>      0000000
>>>>>
>>>>>> sudo i2cdump -y -f 0 0x50
>>>>>
>>>>>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>>>>      No size specified (using byte-data access)
>>>>>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
>>>>>
>>>> This should work after you load the "i2c-dev" module.
>>>
>>> Silly me. Thank you.
>>>
>>>> If you get it to work, please provide the output. Maybe it helps tracking down the problem.
>>>
>>> ```
>>> $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>> No size specified (using byte-data access)
>>>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
>>> 00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
>>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
>>> 20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
>>> 30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
>>> 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> 80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
>>> 90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
>>> a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
>>> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
>>> d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
>>> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>> ```
>>>
>>> So (00,b) = 0x00 opposed to 0x07 in your example output.
>>>
>>
>> Yes, that assumed that reading the nvram/eeprom succeeded, which it didn't.
>> The value might also be 7 directly after booting and before loading
>> the spd5118 driver.
>>
>> Anyway, it almost looks like setting the page doesn't work, or maybe write
>> operations in general.
>>
>> Can you try the following ?
>>
>> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=64 bs=1
>>
>> and
>>
>> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=1 bs=64
>>
>> That should only try to read from page 0.
> 
>      $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=64 bs=1
>      64+0 records in
>      64+0 records out
>      64 bytes copied, 0.046002 s, 1.4 kB/s
>      $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=1 bs=64
>      1+0 records in
>      1+0 records out
>      64 bytes copied, 0.000215414 s, 297 kB/s
> 
>> Also, please try to set a temperature limit, either temp1_max
>> or temp1_crit. Setting temp1_max to, say, 56000, or temp1_crit
>> to 84000 should do.
> 
> I did
> 
>      $ tail -3 /etc/sensors3.conf
>      chip "spd5118-*"
>          set temp1_max 56000
>          set temp1_crit 84000
> 
> but it stays with the defaults:
> 
> ```
> $ sensors

Did you run "sudo sensors -s" ?

I don't know if that would report errors, though.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 18.06.24 um 17:10 schrieb Guenter Roeck:
> On 6/18/24 07:59, Paul Menzel wrote:
> [ ... ]
> 
>> I did
>>
>>      $ tail -3 /etc/sensors3.conf
>>      chip "spd5118-*"
>>          set temp1_max 56000
>>          set temp1_crit 84000
>>
>> but it stays with the defaults:
>>
>> ```
>> $ sensors
>> spd5118-i2c-0-53
>> Adapter: SMBus I801 adapter at efa0
>> temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
>>                         (crit low =  +0.0°C, crit = +85.0°C)
>>
> 
> You'd have to write directly into the attribute files.
> For example, if you have
> 
> $ grep . /sys/class/hwmon/*/name
> /sys/class/hwmon/hwmon0/name:nvme
> /sys/class/hwmon/hwmon1/name:nct6687
> /sys/class/hwmon/hwmon2/name:k10temp
> /sys/class/hwmon/hwmon3/name:spd5118
> /sys/class/hwmon/hwmon4/name:spd5118
> /sys/class/hwmon/hwmon5/name:spd5118
> /sys/class/hwmon/hwmon6/name:spd5118
> /sys/class/hwmon/hwmon7/name:mt7921_phy0
> /sys/class/hwmon/hwmon8/name:amdgpu
> 
> you could run
> 
> sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'

     $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
     bash: line 1: echo: write error: No such device or address


Kind regards,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 18.06.24 um 17:12 schrieb Guenter Roeck:
> On 6/18/24 07:59, Paul Menzel wrote:

>> Am 18.06.24 um 16:23 schrieb Guenter Roeck:
>>> On 6/18/24 06:51, Paul Menzel wrote:
>>
>>>> Am 18.06.24 um 15:32 schrieb Guenter Roeck:
>>>>
>>>>> On 6/18/24 03:25, Paul Menzel wrote:
>>>>> [ ... ]
>>>>>>
>>>>>>      $ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>>      -r--r--r-- 1 root root 1024 Jun 18 12:17  /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>>      $ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
>>>>>>      cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
>>>>>
>>>>> That suggests that the i801 driver got an error when trying some 
>>>>> chip operation.
>>>>> Unfortunately I have no idea what that error or the failed 
>>>>> operation might be.
>>>>>
>>>>>>      $ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
>>>>>>      od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
>>>>>>      0000000
>>>>>>
>>>>>>> sudo i2cdump -y -f 0 0x50
>>>>>>
>>>>>>      $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>>>>>      No size specified (using byte-data access)
>>>>>>      Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
>>>>>>
>>>>> This should work after you load the "i2c-dev" module.
>>>>
>>>> Silly me. Thank you.
>>>>
>>>>> If you get it to work, please provide the output. Maybe it helps 
>>>>> tracking down the problem.
>>>>
>>>> ```
>>>> $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
>>>> No size specified (using byte-data access)
>>>>       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    
>>>> 0123456789abcdef
>>>> 00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00    Q???2?2......?..
>>>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
>>>> 20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
>>>> 30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .X?.............
>>>> 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> 80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00    0????. b....??..
>>>> 90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e    ....????z?....?>
>>>> a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00    ?>?>.}??0u'??.?.
>>>> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10    ......?????? N ?
>>>> d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00    '??4 ?'????L??..
>>>> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
>>>> ```
>>>>
>>>> So (00,b) = 0x00 opposed to 0x07 in your example output.
>>>>
>>>
>>> Yes, that assumed that reading the nvram/eeprom succeeded, which it didn't.
>>> The value might also be 7 directly after booting and before loading
>>> the spd5118 driver.
>>>
>>> Anyway, it almost looks like setting the page doesn't work, or maybe write
>>> operations in general.
>>>
>>> Can you try the following ?
>>>
>>> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom 
>>> count=64 bs=1
>>>
>>> and
>>>
>>> dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom 
>>> count=1 bs=64
>>>
>>> That should only try to read from page 0.
>>
>>      $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=64 bs=1
>>      64+0 records in
>>      64+0 records out
>>      64 bytes copied, 0.046002 s, 1.4 kB/s
>>      $ sudo dd if=/sys/bus/i2c/drivers/spd5118/0-0050/eeprom of=/tmp/eeprom count=1 bs=64
>>      1+0 records in
>>      1+0 records out
>>      64 bytes copied, 0.000215414 s, 297 kB/s
>>
>>> Also, please try to set a temperature limit, either temp1_max
>>> or temp1_crit. Setting temp1_max to, say, 56000, or temp1_crit
>>> to 84000 should do.
>>
>> I did
>>
>>      $ tail -3 /etc/sensors3.conf
>>      chip "spd5118-*"
>>          set temp1_max 56000
>>          set temp1_crit 84000
>>
>> but it stays with the defaults:
>>
>> ```
>> $ sensors
> 
> Did you run "sudo sensors -s" ?

No, I did not.

> I don't know if that would report errors, though.

It looks like it does:

     $ sudo sensors -s
     Error: File /etc/sensors3.conf, line 522: Failed to set value
     Error: File /etc/sensors3.conf, line 523: Failed to set value
     spd5118-i2c-0-53: At least one "set" statement failed
     Error: File /etc/sensors3.conf, line 522: Failed to set value
     Error: File /etc/sensors3.conf, line 523: Failed to set value
     spd5118-i2c-0-51: At least one "set" statement failed
     Error: File /etc/sensors3.conf, line 522: Failed to set value
     Error: File /etc/sensors3.conf, line 523: Failed to set value
     spd5118-i2c-0-52: At least one "set" statement failed
     Error: File /etc/sensors3.conf, line 522: Failed to set value
     Error: File /etc/sensors3.conf, line 523: Failed to set value
     spd5118-i2c-0-50: At least one "set" statement failed


Kind regards,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/18/24 08:25, Paul Menzel wrote:

[ ... ]

>> sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
> 
>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>      bash: line 1: echo: write error: No such device or address
> 

So, as I suspected, that means that all write operations fail,
meaning the write operation used by regmap is not supported by
the chip and/or by the i2c controller.

That makes me wonder if the same problem is seen with other variants
of the same problem. If so, we may have to drop regmap support
completely.

Does anyone else of those listening in have a Intel/i801 system
and could possibly test if they have the same problem ?

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/18/24 08:25, Paul Menzel wrote:
> Dear Guenter,
> 
> 
> Am 18.06.24 um 17:10 schrieb Guenter Roeck:
>> On 6/18/24 07:59, Paul Menzel wrote:
>> [ ... ]
>>
>>> I did
>>>
>>>      $ tail -3 /etc/sensors3.conf
>>>      chip "spd5118-*"
>>>          set temp1_max 56000
>>>          set temp1_crit 84000
>>>
>>> but it stays with the defaults:
>>>
>>> ```
>>> $ sensors
>>> spd5118-i2c-0-53
>>> Adapter: SMBus I801 adapter at efa0
>>> temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
>>>                         (crit low =  +0.0°C, crit = +85.0°C)
>>>
>>
>> You'd have to write directly into the attribute files.
>> For example, if you have
>>
>> $ grep . /sys/class/hwmon/*/name
>> /sys/class/hwmon/hwmon0/name:nvme
>> /sys/class/hwmon/hwmon1/name:nct6687
>> /sys/class/hwmon/hwmon2/name:k10temp
>> /sys/class/hwmon/hwmon3/name:spd5118
>> /sys/class/hwmon/hwmon4/name:spd5118
>> /sys/class/hwmon/hwmon5/name:spd5118
>> /sys/class/hwmon/hwmon6/name:spd5118
>> /sys/class/hwmon/hwmon7/name:mt7921_phy0
>> /sys/class/hwmon/hwmon8/name:amdgpu
>>
>> you could run
>>
>> sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
> 
>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>      bash: line 1: echo: write error: No such device or address
> 

Please add

	.use_single_write = true,

to the regmap configuration (spd5118_regmap_config) to see if it helps.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Paul Menzel]

Dear Guenter,


Am 18.06.24 um 20:16 schrieb Guenter Roeck:
> On 6/18/24 08:25, Paul Menzel wrote:

>> Am 18.06.24 um 17:10 schrieb Guenter Roeck:
>>> On 6/18/24 07:59, Paul Menzel wrote:
>>> [ ... ]
>>>
>>>> I did
>>>>
>>>>      $ tail -3 /etc/sensors3.conf
>>>>      chip "spd5118-*"
>>>>          set temp1_max 56000
>>>>          set temp1_crit 84000
>>>>
>>>> but it stays with the defaults:
>>>>
>>>> ```
>>>> $ sensors
>>>> spd5118-i2c-0-53
>>>> Adapter: SMBus I801 adapter at efa0
>>>> temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
>>>>                         (crit low =  +0.0°C, crit = +85.0°C)
>>>>
>>>
>>> You'd have to write directly into the attribute files.
>>> For example, if you have
>>>
>>> $ grep . /sys/class/hwmon/*/name
>>> /sys/class/hwmon/hwmon0/name:nvme
>>> /sys/class/hwmon/hwmon1/name:nct6687
>>> /sys/class/hwmon/hwmon2/name:k10temp
>>> /sys/class/hwmon/hwmon3/name:spd5118
>>> /sys/class/hwmon/hwmon4/name:spd5118
>>> /sys/class/hwmon/hwmon5/name:spd5118
>>> /sys/class/hwmon/hwmon6/name:spd5118
>>> /sys/class/hwmon/hwmon7/name:mt7921_phy0
>>> /sys/class/hwmon/hwmon8/name:amdgpu
>>>
>>> you could run
>>>
>>> sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>>
>>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>>      bash: line 1: echo: write error: No such device or address
>>
> 
> Please add
> 
>      .use_single_write = true,
> 
> to the regmap configuration (spd5118_regmap_config) to see if it helps.

Unfortunately, it does not:

     $ git log --no-decorate -p -1
     commit c27ae51b689d7bdb7baf10c434438d501bd384aa
     Author: Paul Menzel <pmenzel@molgen.mpg.de>
     Date:   Tue Jun 18 20:26:17 2024 +0200

         hwmon: spd5118: Use .use_single_write = true,

     diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
     index ac94a67793605..33a628840597e 100644
     --- a/drivers/hwmon/spd5118.c
     +++ b/drivers/hwmon/spd5118.c
     @@ -522,6 +522,7 @@ static const struct regmap_config 
spd5118_regmap_config = {
             .writeable_reg = spd5118_writeable_reg,
             .volatile_reg = spd5118_volatile_reg,
             .cache_type = REGCACHE_MAPLE,
     +       .use_single_write = true,
      };

      static int spd5118_probe(struct i2c_client *client)

     $ uname -r
     6.10.0-rc4.mx64.461-00048-gc27ae51b689d
     $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
     bash: line 1: echo: write error: No such device or address


Kind regards,

Paul

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/18/24 11:59, Paul Menzel wrote:
> Dear Guenter,
> 
> 
> Am 18.06.24 um 20:16 schrieb Guenter Roeck:
>> On 6/18/24 08:25, Paul Menzel wrote:
> 
>>> Am 18.06.24 um 17:10 schrieb Guenter Roeck:
>>>> On 6/18/24 07:59, Paul Menzel wrote:
>>>> [ ... ]
>>>>
>>>>> I did
>>>>>
>>>>>      $ tail -3 /etc/sensors3.conf
>>>>>      chip "spd5118-*"
>>>>>          set temp1_max 56000
>>>>>          set temp1_crit 84000
>>>>>
>>>>> but it stays with the defaults:
>>>>>
>>>>> ```
>>>>> $ sensors
>>>>> spd5118-i2c-0-53
>>>>> Adapter: SMBus I801 adapter at efa0
>>>>> temp1:        +20.8°C  (low  =  +0.0°C, high = +55.0°C)
>>>>>                         (crit low =  +0.0°C, crit = +85.0°C)
>>>>>
>>>>
>>>> You'd have to write directly into the attribute files.
>>>> For example, if you have
>>>>
>>>> $ grep . /sys/class/hwmon/*/name
>>>> /sys/class/hwmon/hwmon0/name:nvme
>>>> /sys/class/hwmon/hwmon1/name:nct6687
>>>> /sys/class/hwmon/hwmon2/name:k10temp
>>>> /sys/class/hwmon/hwmon3/name:spd5118
>>>> /sys/class/hwmon/hwmon4/name:spd5118
>>>> /sys/class/hwmon/hwmon5/name:spd5118
>>>> /sys/class/hwmon/hwmon6/name:spd5118
>>>> /sys/class/hwmon/hwmon7/name:mt7921_phy0
>>>> /sys/class/hwmon/hwmon8/name:amdgpu
>>>>
>>>> you could run
>>>>
>>>> sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>>>
>>>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>>>      bash: line 1: echo: write error: No such device or address
>>>
>>
>> Please add
>>
>>      .use_single_write = true,
>>
>> to the regmap configuration (spd5118_regmap_config) to see if it helps.
> 
> Unfortunately, it does not:
> 
>      $ git log --no-decorate -p -1
>      commit c27ae51b689d7bdb7baf10c434438d501bd384aa
>      Author: Paul Menzel <pmenzel@molgen.mpg.de>
>      Date:   Tue Jun 18 20:26:17 2024 +0200
> 
>          hwmon: spd5118: Use .use_single_write = true,
> 
>      diff --git a/drivers/hwmon/spd5118.c b/drivers/hwmon/spd5118.c
>      index ac94a67793605..33a628840597e 100644
>      --- a/drivers/hwmon/spd5118.c
>      +++ b/drivers/hwmon/spd5118.c
>      @@ -522,6 +522,7 @@ static const struct regmap_config spd5118_regmap_config = {
>              .writeable_reg = spd5118_writeable_reg,
>              .volatile_reg = spd5118_volatile_reg,
>              .cache_type = REGCACHE_MAPLE,
>      +       .use_single_write = true,
>       };
> 
>       static int spd5118_probe(struct i2c_client *client)
> 
>      $ uname -r
>      6.10.0-rc4.mx64.461-00048-gc27ae51b689d
>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>      bash: line 1: echo: write error: No such device or address
> 
> 

Too bad. Still, thanks for trying!

I have a more comprehensive patch series which I think _should_ work.
I'll send it out for testing shortly.

Thanks,
Guenter

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Heiner Kallweit]

On 12.06.2024 18:19, Wolfram Sang wrote:
> 
> CCing Heiner...
> 
>>>>> Yes, maybe this could be simplified to "(LP)DDR memory types"
>>>>>
>>>>
>>>> I rephrased it to "Only works for (LP)DDR memory types up to DDR5".
>>>
>>> Thanks!
>>>
>>>> How about "Only works on systems with 1 to 8 memory slots" ?
>>>
>>> This is a question for Heiner. I'd think it is is still correct, but I
>>> don't know exactly.
>>>
>>
>> My interpretation was that it should work if the DIMMs are connected to
>> multiplexed I2C busses, but probably not if they are connected to
>> different adapters. The error message in that case is a bit misleading,
>> though, because it claims that "More than 8 memory slots on a single bus",
>> which isn't necessarily the case. For example, it should be perfectly valid
>> to have up to 24 DIMMs in this system.
>>
>> i2c-0/name:SMBus PIIX4 adapter port 0 at 0b00
>> i2c-1/name:SMBus PIIX4 adapter port 2 at 0b00
>> i2c-2/name:SMBus PIIX4 adapter port 1 at 0b20
>>
>> ... but I guess that is a question for someone with such a system to answer.
>>
>> Ultimately the handling of systems with more than 8 memory slots will need
>> to be updated at some point. On my systems, with 'i2c: piix4: Register SPDs'
>> applied, I see
>>
>> i2c i2c-0: 4/4 memory slots populated (from DMI)
>>     [my system is running 6.6.y which still generates that message]
>> i2c i2c-0: Successfully instantiated SPD at 0x50
>> i2c i2c-0: Successfully instantiated SPD at 0x51
>> i2c i2c-0: Successfully instantiated SPD at 0x52
>> i2c i2c-0: Successfully instantiated SPD at 0x53
>> i2c i2c-1: 4/4 memory slots populated (from DMI)
>> i2c i2c-2: 4/4 memory slots populated (from DMI)
>>
>> meaning the function is called for each adapter (which makes sense).
>> However, the code counting the DIMMs doesn't really take the adapter
>> into account, meaning adapters 1 and 2 are still probed even though
>> all DIMMs were already instantiated from adapter 0.
>>
>> On a system with more than 8 DIMMs connected to different piix4 adapters
>> (without mux) we'd probably see something like
>>
>> i2c i2c-0: More than 8 memory slots on a single bus, contact i801 maintainer ...
>> i2c i2c-1: More than 8 memory slots on a single bus, contact i801 maintainer ...
>> i2c i2c-2: More than 8 memory slots on a single bus, contact i801 maintainer ...
>>
>> which wouldn't be very helpful. I think the main problem may be that
>> the i801 driver implements sub-adapters as muxes, but the piix4 driver
>> doesn't do (or need) that. The message is also i801 centric which doesn't
>> apply anymore after 'i2c: piix4: Register SPDs' is applied.
>>
>> However, I would not want to even try changing that code without access
>> to a system using piix4 and supporting more than 8 memory slots.
>>
>> Thanks,
>> Guenter
>>
>>

It seems Intel systems never have more than one i801 SMBUS adapter,
therefore systems with more than 8 memory slots have to use muxing.
The current code was developed for the Intel use case, and therefore
doesn't consider that a system may have dedicated SMBUS controllers
per 8 memory slots. So support for this scenario has to be added.

Re: [PATCH v4 5/6] i2c: smbus: Support DDR5 SPD EEPROMs

[Guenter Roeck]

On 6/24/24 13:06, Heiner Kallweit wrote:
[ ... ]
> It seems Intel systems never have more than one i801 SMBUS adapter,
> therefore systems with more than 8 memory slots have to use muxing.
> The current code was developed for the Intel use case, and therefore
> doesn't consider that a system may have dedicated SMBUS controllers
> per 8 memory slots. So support for this scenario has to be added.
> 

I absolutely agree, hopefully by someone with such a system.

Thanks,
Guenter