* [PATCH v3 1/2] dt-bindings: hwmon/pmbus: Add Infineon xdp730
2026-06-01 9:09 [PATCH v3 0/2] Add support for Infineon eFuse xdp730 ASHISH YADAV
@ 2026-06-01 9:09 ` ASHISH YADAV
2026-06-01 9:13 ` sashiko-bot
2026-06-01 11:58 ` Krzysztof Kozlowski
2026-06-01 9:09 ` [PATCH v3 2/2] hwmon:(pmbus/xdp720) Add support for efuse xdp730 ASHISH YADAV
1 sibling, 2 replies; 6+ messages in thread
From: ASHISH YADAV @ 2026-06-01 9:09 UTC (permalink / raw)
To: Guenter Roeck, Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: linux-hwmon, devicetree, linux-kernel, Ashish Yadav
From: Ashish Yadav <ashish.yadav@infineon.com>
Add documentation for the device tree binding of the XDP730 eFuse.
Signed-off-by: Ashish Yadav <ashish.yadav@infineon.com>
---
.../bindings/hwmon/pmbus/infineon,xdp720.yaml | 41 ++++++++++++++-----
1 file changed, 31 insertions(+), 10 deletions(-)
diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/infineon,xdp720.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,xdp720.yaml
index 72bc3a5e7139..27ec00a8a41d 100644
--- a/Documentation/devicetree/bindings/hwmon/pmbus/infineon,xdp720.yaml
+++ b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,xdp720.yaml
@@ -5,23 +5,31 @@
$id: http://devicetree.org/schemas/hwmon/pmbus/infineon,xdp720.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
-title: Infineon XDP720 Digital eFuse Controller
+title: Infineon XDP720 / XDP730 Digital eFuse Controllers
maintainers:
- Ashish Yadav <ashish.yadav@infineon.com>
description: |
- The XDP720 is an eFuse with integrated current sensor and digital
- controller. It provides accurate system telemetry (V, I, P, T) and
- reports analog current at the IMON pin for post-processing.
+ The XDP720 and XDP730 are PMBus-compliant digital eFuse controllers
+ with an integrated current sensor. They provide accurate system
+ telemetry (V, I, P, T) and report analog current at the IMON pin for
+ post-processing.
- Datasheet:
- https://www.infineon.com/assets/row/public/documents/24/49/infineon-xdp720-001-datasheet-en.pdf
+ Both parts share the same PMBus register map and direct-format
+ coefficients; they differ in the GIMON gain step exposed via the
+ TELEMETRY_AVG register (bit 10) and in the VDD_VIN pin number
+ (XDP720: pin 9, XDP730: pin 20).
+
+ Datasheets:
+ - XDP720: https://www.infineon.com/assets/row/public/documents/24/49/infineon-xdp720-001-datasheet-en.pdf
+ - XDP730: https://www.infineon.com/assets/row/public/documents/24/49/infineon-xdp730-001-datasheet-en.pdf
properties:
compatible:
enum:
- infineon,xdp720
+ - infineon,xdp730
reg:
maxItems: 1
@@ -33,9 +41,9 @@ properties:
vdd-vin-supply:
description:
- Supply for the VDD_VIN pin (pin 9), the IC controller power supply.
- Typically connected to the input bus (VIN) through a 100 ohm / 100 nF
- RC filter.
+ Supply for the VDD_VIN pin (XDP720 pin 9, XDP730 pin 20), the IC
+ controller power supply. Typically connected to the input bus
+ (VIN) through a 100 ohm / 100 nF RC filter.
required:
- compatible
@@ -50,10 +58,23 @@ examples:
#address-cells = <1>;
#size-cells = <0>;
- hwmon@11 {
+ efuse@11 {
compatible = "infineon,xdp720";
reg = <0x11>;
vdd-vin-supply = <&vdd_vin>;
infineon,rimon-micro-ohms = <1098000000>; /* 1.098k ohm */
};
};
+
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ efuse@12 {
+ compatible = "infineon,xdp730";
+ reg = <0x12>;
+ vdd-vin-supply = <&vdd_vin>;
+ infineon,rimon-micro-ohms = <1098000000>; /* 1.098k ohm */
+ };
+ };
--
2.39.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 2/2] hwmon:(pmbus/xdp720) Add support for efuse xdp730
2026-06-01 9:09 [PATCH v3 0/2] Add support for Infineon eFuse xdp730 ASHISH YADAV
2026-06-01 9:09 ` [PATCH v3 1/2] dt-bindings: hwmon/pmbus: Add Infineon xdp730 ASHISH YADAV
@ 2026-06-01 9:09 ` ASHISH YADAV
2026-06-01 9:17 ` sashiko-bot
1 sibling, 1 reply; 6+ messages in thread
From: ASHISH YADAV @ 2026-06-01 9:09 UTC (permalink / raw)
To: Guenter Roeck, Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: linux-hwmon, devicetree, linux-kernel, Ashish Yadav
From: Ashish Yadav <ashish.yadav@infineon.com>
Adds support for the Infineon XDP730 Digital eFuse Controller by
updating the existing XDP720 driver.
Signed-off-by: Ashish Yadav <ashish.yadav@infineon.com>
---
XDP720/XDP730 Digital eFuse Controllers provides accurate system telemetry
(V, I, P, T) and reports analog current at the IMON pin for post-processing.
Both parts share the same PMBus register map and direct-format
coefficients; they differ in the GIMON gain step exposed via the
TELEMETRY_AVG register (bit 10) and in the VDD_VIN pin number
(XDP720: pin 9, XDP730: pin 20).
The Current and Power measurement depends on the RIMON and GIMON values.
The GIMON (microA/A) depends on the 10th bit of TELEMETRY_AVG PMBUS Register.
The value of RIMON (kohm) can be provided by the user through device tree using
infineon,rimon-micro-ohms property.
---
drivers/hwmon/pmbus/Kconfig | 2 +-
drivers/hwmon/pmbus/xdp720.c | 167 +++++++++++++++++++++--------------
2 files changed, 100 insertions(+), 69 deletions(-)
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 8f4bff375ecb..a9e86d92b044 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -715,7 +715,7 @@ config SENSORS_XDP720
tristate "Infineon XDP720 family"
help
If you say yes here you get hardware monitoring support for Infineon
- XDP720.
+ XDP720 and XDP730 Digital eFuse Controllers.
This driver can also be built as a module. If so, the module will
be called xdp720.
diff --git a/drivers/hwmon/pmbus/xdp720.c b/drivers/hwmon/pmbus/xdp720.c
index 8729a771f216..1a5eab09f2fd 100644
--- a/drivers/hwmon/pmbus/xdp720.c
+++ b/drivers/hwmon/pmbus/xdp720.c
@@ -1,128 +1,159 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Hardware monitoring driver for Infineon XDP720 Digital eFuse Controller
+ * Hardware monitoring driver for Infineon XDP720 / XDP730 Digital
+ * eFuse Controllers.
+ *
+ * Both parts share the same PMBus register map and direct-format
+ * coefficients; they differ in the GIMON gain step exposed via
+ * the TELEMETRY_AVG register and in the VDD_VIN pin number.
*
* Copyright (c) 2026 Infineon Technologies. All rights reserved.
*/
+#include <linux/bitops.h>
#include <linux/i2c.h>
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
-#include <linux/of_device.h>
-#include <linux/bitops.h>
#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
#include "pmbus.h"
/*
- * The IMON resistor required to generate the system overcurrent protection.
- * Arbitrary default Rimon value: 2k Ohm
+ * The IMON resistor required to generate the system overcurrent
+ * protection. Arbitrary default Rimon value: 2 kOhm (in micro-ohms).
*/
-#define XDP720_DEFAULT_RIMON 2000000000 /* 2k ohm */
-#define XDP720_TELEMETRY_AVG 0xE9
+#define XDP720_DEFAULT_RIMON 2000000000U /* 2 kohm */
+#define XDP720_TELEMETRY_AVG 0xE9
+#define XDP720_TELEMETRY_AVG_GIMON BIT(10) /* high/low GIMON select */
+
+/* Chip identifiers carried in OF match-data and i2c_device_id->driver_data. */
+enum xdp720_chip_id {
+ CHIP_XDP720 = 0,
+ CHIP_XDP730,
+};
-static struct pmbus_driver_info xdp720_info = {
+struct xdp720_data {
+ enum xdp720_chip_id id;
+ struct pmbus_driver_info info;
+};
+
+static const struct pmbus_driver_info xdp720_info = {
.pages = 1,
- .format[PSC_VOLTAGE_IN] = direct,
- .format[PSC_VOLTAGE_OUT] = direct,
- .format[PSC_CURRENT_OUT] = direct,
- .format[PSC_POWER] = direct,
- .format[PSC_TEMPERATURE] = direct,
-
- .m[PSC_VOLTAGE_IN] = 4653,
- .b[PSC_VOLTAGE_IN] = 0,
- .R[PSC_VOLTAGE_IN] = -2,
- .m[PSC_VOLTAGE_OUT] = 4653,
- .b[PSC_VOLTAGE_OUT] = 0,
- .R[PSC_VOLTAGE_OUT] = -2,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
+ .format[PSC_POWER] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+
+ .m[PSC_VOLTAGE_IN] = 4653,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = -2,
+ .m[PSC_VOLTAGE_OUT] = 4653,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = -2,
/*
- * Current and Power measurement depends on the RIMON (kOhm) and
- * GIMON(microA/A) values.
+ * Current and Power measurement depend on the RIMON (micro-ohm)
+ * and GIMON (microA/A) values; scaled per-instance in probe().
*/
- .m[PSC_CURRENT_OUT] = 24668,
- .b[PSC_CURRENT_OUT] = 0,
- .R[PSC_CURRENT_OUT] = -4,
- .m[PSC_POWER] = 4486,
- .b[PSC_POWER] = 0,
- .R[PSC_POWER] = -1,
- .m[PSC_TEMPERATURE] = 54,
- .b[PSC_TEMPERATURE] = 22521,
- .R[PSC_TEMPERATURE] = -1,
+ .m[PSC_CURRENT_OUT] = 24668,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = -4,
+ .m[PSC_POWER] = 4486,
+ .b[PSC_POWER] = 0,
+ .R[PSC_POWER] = -1,
+ .m[PSC_TEMPERATURE] = 54,
+ .b[PSC_TEMPERATURE] = 22521,
+ .R[PSC_TEMPERATURE] = -1,
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |
- PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_INPUT |
- PMBUS_HAVE_STATUS_TEMP,
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |
+ PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
};
static int xdp720_probe(struct i2c_client *client)
{
- struct pmbus_driver_info *info;
+ struct xdp720_data *data;
int ret;
- u32 rimon;
int gimon;
+ u32 rimon;
- info = devm_kmemdup(&client->dev, &xdp720_info, sizeof(*info),
- GFP_KERNEL);
- if (!info)
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
return -ENOMEM;
+ data->id = (enum xdp720_chip_id)(uintptr_t)i2c_get_match_data(client);
+ data->info = xdp720_info;
+
ret = devm_regulator_get_enable(&client->dev, "vdd-vin");
if (ret)
return dev_err_probe(&client->dev, ret,
- "failed to enable vdd-vin supply\n");
+ "failed to enable vdd-vin supply\n");
ret = i2c_smbus_read_word_data(client, XDP720_TELEMETRY_AVG);
- if (ret < 0) {
- dev_err(&client->dev, "Can't get TELEMETRY_AVG\n");
- return ret;
+ if (ret < 0)
+ return dev_err_probe(&client->dev, ret,
+ "failed to read TELEMETRY_AVG\n");
+
+ /* Bit 10 of TELEMETRY_AVG selects the GIMON gain step in microA/A */
+ switch (data->id) {
+ case CHIP_XDP720:
+ gimon = (ret & XDP720_TELEMETRY_AVG_GIMON) ? 18200 : 9100;
+ dev_info(&client->dev, "Initialised XDP720 instance\n");
+ break;
+ case CHIP_XDP730:
+ gimon = (ret & XDP720_TELEMETRY_AVG_GIMON) ? 20000 : 10000;
+ dev_info(&client->dev, "Initialised XDP730 instance\n");
+ break;
+ default:
+ return -EINVAL;
}
- ret >>= 10; /* 10th bit of TELEMETRY_AVG REG for GIMON Value */
- ret &= GENMASK(0, 0);
- if (ret == 1)
- gimon = 18200; /* output gain 18.2 microA/A */
- else
- gimon = 9100; /* output gain 9.1 microA/A */
-
- if (of_property_read_u32(client->dev.of_node,
- "infineon,rimon-micro-ohms", &rimon))
- rimon = XDP720_DEFAULT_RIMON; /* Default if not set via DT */
+ if (device_property_read_u32(&client->dev,
+ "infineon,rimon-micro-ohms", &rimon))
+ rimon = XDP720_DEFAULT_RIMON; /* Default if not in FW */
if (rimon == 0)
return -EINVAL;
- /* Adapt the current and power scale for each instance */
- info->m[PSC_CURRENT_OUT] = DIV64_U64_ROUND_CLOSEST((u64)
- info->m[PSC_CURRENT_OUT] * rimon * gimon, 1000000000000ULL);
- info->m[PSC_POWER] = DIV64_U64_ROUND_CLOSEST((u64)
- info->m[PSC_POWER] * rimon * gimon, 1000000000000000ULL);
+ /* Adapt the current and power scale for each instance. */
+ data->info.m[PSC_CURRENT_OUT] = DIV64_U64_ROUND_CLOSEST((u64)
+ data->info.m[PSC_CURRENT_OUT] * rimon * gimon,
+ 1000000000000ULL);
+ data->info.m[PSC_POWER] = DIV64_U64_ROUND_CLOSEST((u64)
+ data->info.m[PSC_POWER] * rimon * gimon,
+ 1000000000000000ULL);
- return pmbus_do_probe(client, info);
+ return pmbus_do_probe(client, &data->info);
}
static const struct of_device_id xdp720_of_match[] = {
- { .compatible = "infineon,xdp720" },
- {}
+ { .compatible = "infineon,xdp720", .data = (void *)CHIP_XDP720 },
+ { .compatible = "infineon,xdp730", .data = (void *)CHIP_XDP730 },
+ { }
};
MODULE_DEVICE_TABLE(of, xdp720_of_match);
static const struct i2c_device_id xdp720_id[] = {
- { "xdp720" },
- {}
+ { "xdp720", CHIP_XDP720 },
+ { "xdp730", CHIP_XDP730 },
+ { }
};
MODULE_DEVICE_TABLE(i2c, xdp720_id);
static struct i2c_driver xdp720_driver = {
.driver = {
- .name = "xdp720",
- .of_match_table = xdp720_of_match,
+ .name = "xdp720",
+ .of_match_table = xdp720_of_match,
},
- .probe = xdp720_probe,
- .id_table = xdp720_id,
+ .probe = xdp720_probe,
+ .id_table = xdp720_id,
};
module_i2c_driver(xdp720_driver);
MODULE_AUTHOR("Ashish Yadav <ashish.yadav@infineon.com>");
-MODULE_DESCRIPTION("PMBus driver for Infineon XDP720 Digital eFuse Controller");
+MODULE_DESCRIPTION("PMBus driver for Infineon XDP720/XDP730 Digital eFuse Controllers");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("PMBUS");
--
2.39.5
^ permalink raw reply related [flat|nested] 6+ messages in thread