* [PATCH v5 1/3] dt-bindings: hwmon: (pmbus/adp1050): Add adp1051, adp1055 and ltp8800
2025-07-09 5:43 [PATCH v5 0/3] Add support for ADP1051/ADP1055 and LTP8800-1A/-2/-4A Cedric Encarnacion
@ 2025-07-09 5:43 ` Cedric Encarnacion
2025-07-16 14:52 ` Guenter Roeck
2025-07-09 5:43 ` [PATCH v5 2/3] hwmon: (pmbus/adp1050): Add support for " Cedric Encarnacion
2025-07-09 5:43 ` [PATCH v5 3/3] hwmon: (pmbus/adp1050): Add regulator support for ltp8800 Cedric Encarnacion
2 siblings, 1 reply; 7+ messages in thread
From: Cedric Encarnacion @ 2025-07-09 5:43 UTC (permalink / raw)
To: Jean Delvare, Guenter Roeck, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Jonathan Corbet, Andy Shevchenko, Delphine CC Chiu,
Uwe Kleine-König
Cc: Radu Sabau, Alexis Czezar Torreno, linux-hwmon, devicetree,
linux-kernel, linux-doc, Cedric Encarnacion, Conor Dooley
Add support for adp1051, adp1055, and ltp8800.
ADP1051: 6 PWM for I/O Voltage, I/O Current, Temperature
ADP1055: 6 PWM for I/O Voltage, I/O Current, Power, Temperature
LTP8800-1A/-2/-4A: 150A/135A/200A DC/DC µModule Regulator
Co-developed-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
.../devicetree/bindings/hwmon/pmbus/adi,adp1050.yaml | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/adi,adp1050.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/adi,adp1050.yaml
index 10c2204bc3df3eaa98881085247ad2ff87f96645..af75300939429975e7151be943e976e265c45f02 100644
--- a/Documentation/devicetree/bindings/hwmon/pmbus/adi,adp1050.yaml
+++ b/Documentation/devicetree/bindings/hwmon/pmbus/adi,adp1050.yaml
@@ -10,16 +10,27 @@ maintainers:
- Radu Sabau <radu.sabau@analog.com>
description: |
- The ADP1050 is used to monitor system voltages, currents and temperatures.
+ The ADP1050 and similar devices are used to monitor system voltages,
+ currents, power, and temperatures.
+
Through the PMBus interface, the ADP1050 targets isolated power supplies
and has four individual monitors for input/output voltage, input current
and temperature.
Datasheet:
https://www.analog.com/en/products/adp1050.html
+ https://www.analog.com/en/products/adp1051.html
+ https://www.analog.com/en/products/adp1055.html
+ https://www.analog.com/en/products/ltp8800-1a.html
+ https://www.analog.com/en/products/ltp8800-2.html
+ https://www.analog.com/en/products/ltp8800-4a.html
properties:
compatible:
- const: adi,adp1050
+ enum:
+ - adi,adp1050
+ - adi,adp1051
+ - adi,adp1055
+ - adi,ltp8800
reg:
maxItems: 1
--
2.39.5
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v5 2/3] hwmon: (pmbus/adp1050): Add support for adp1051, adp1055 and ltp8800
2025-07-09 5:43 [PATCH v5 0/3] Add support for ADP1051/ADP1055 and LTP8800-1A/-2/-4A Cedric Encarnacion
2025-07-09 5:43 ` [PATCH v5 1/3] dt-bindings: hwmon: (pmbus/adp1050): Add adp1051, adp1055 and ltp8800 Cedric Encarnacion
@ 2025-07-09 5:43 ` Cedric Encarnacion
2025-07-16 14:54 ` Guenter Roeck
2025-07-09 5:43 ` [PATCH v5 3/3] hwmon: (pmbus/adp1050): Add regulator support for ltp8800 Cedric Encarnacion
2 siblings, 1 reply; 7+ messages in thread
From: Cedric Encarnacion @ 2025-07-09 5:43 UTC (permalink / raw)
To: Jean Delvare, Guenter Roeck, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Jonathan Corbet, Andy Shevchenko, Delphine CC Chiu,
Uwe Kleine-König
Cc: Radu Sabau, Alexis Czezar Torreno, linux-hwmon, devicetree,
linux-kernel, linux-doc, Cedric Encarnacion
Introduce hardware monitoring support for the following devices:
ADP1051: 6 PWM for I/O Voltage, I/O Current, Temperature
ADP1055: 6 PWM for I/O Voltage, I/O Current, Power, Temperature
LTP8800-1A/-2/-4A: 150A/135A/200A DC/DC µModule Regulator
The ADP1051 and ADP1055 are similar digital controllers for high
efficiency DC-DC power conversion while the LTP8800 is a family of
step-down μModule regulators that provides microprocessor core voltage
from 54V power distribution architecture. All of the above components
features telemetry monitoring of input/output voltage, input current,
output power, and temperature over PMBus.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Co-developed-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
---
Documentation/hwmon/adp1050.rst | 71 +++++++++++++++++++++++++++++++++++++----
drivers/hwmon/pmbus/adp1050.c | 62 +++++++++++++++++++++++++++++++++--
2 files changed, 124 insertions(+), 9 deletions(-)
diff --git a/Documentation/hwmon/adp1050.rst b/Documentation/hwmon/adp1050.rst
index 8fa937064886aba7098884c458265722411be553..32514084fbdca5d7fc5a8a2b0df97c7380d76516 100644
--- a/Documentation/hwmon/adp1050.rst
+++ b/Documentation/hwmon/adp1050.rst
@@ -13,6 +13,32 @@ Supported chips:
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1050.pdf
+ * Analog Devices ADP1051
+
+ Prefix: 'adp1051'
+
+ Addresses scanned: I2C 0x70 - 0x77
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1051.pdf
+
+ * Analog Devices ADP1055
+
+ Prefix: 'adp1055'
+
+ Addresses scanned: I2C 0x4B - 0x77
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1055.pdf
+
+ * Analog Devices LTP8800-1A/-2/-4A
+
+ Prefix: 'ltp8800'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-1A.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-2.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-4A.pdf
+
Authors:
- Radu Sabau <radu.sabau@analog.com>
@@ -21,14 +47,17 @@ Authors:
Description
-----------
-This driver supprts hardware monitoring for Analog Devices ADP1050 Digital
-Controller for Isolated Power Supply with PMBus interface.
+This driver supports hardware monitoring for Analog Devices ADP1050, ADP1051,
+and ADP1055 Digital Controller for Isolated Power Supply with PMBus interface,
+and the LTP8800 step-down μModule regulators.
-The ADP1050 is an advanced digital controller with a PMBus™
+The ADP1050, ADP1051, and ADP1055 are advanced digital controllers with PMBus™
interface targeting high density, high efficiency dc-to-dc power
-conversion used to monitor system temperatures, voltages and currents.
-Through the PMBus interface, the device can monitor input/output voltages,
-input current and temperature.
+conversion used to monitor system temperatures, voltages and currents. The
+LTP8800 is a family of step-down μModule regulators that provides microprocessor
+core voltage from 54V power distribution architecture. Through the PMBus
+interface, the device can monitor input/output voltages, input current and
+temperature.
Usage Notes
-----------
@@ -49,16 +78,46 @@ Sysfs Attributes
in1_label "vin"
in1_input Measured input voltage
in1_alarm Input voltage alarm
+in1_crit Critical maximum input voltage
+in1_crit_alarm Input voltage high alarm
+in1_lcrit Critical minimum input voltage
+in1_lcrit_alarm Input voltage critical low alarm
in2_label "vout1"
in2_input Measured output voltage
in2_crit Critical maximum output voltage
in2_crit_alarm Output voltage high alarm
in2_lcrit Critical minimum output voltage
in2_lcrit_alarm Output voltage critical low alarm
+in2_max Critical maximum output voltage
+in2_max_alarm Output voltage critical max alarm
+in2_min Critical minimum output voltage
+in2_min_alarm Output voltage critical min alarm
curr1_label "iin"
curr1_input Measured input current.
curr1_alarm Input current alarm
+curr1_crit Critical maximum input current
+curr1_crit_alarm Input current high alarm
+curr2_label "iout1"
+curr2_input Measured output current
+curr2_alarm Output current alarm
+curr2_crit Critical maximum output current
+curr2_crit_alarm Output current high alarm
+curr2_lcrit Critical minimum output current
+curr2_lcrit_alarm Output current critical low alarm
+curr2_max Critical maximum output current
+curr2_max_alarm Output current critical max alarm
+power1_label "pout1"
+power1_input Measured output power
+power1_crit Critical maximum output power
+power1_crit_alarm Output power high alarm
temp1_input Measured temperature
temp1_crit Critical high temperature
temp1_crit_alarm Chip temperature critical high alarm
+temp1_max Critical maximum temperature
+temp1_max_alarm Temperature critical max alarm
+temp2_input Measured temperature
+temp2_crit Critical high temperature
+temp2_crit_alarm Chip temperature critical high alarm
+temp2_max Critical maximum temperature
+temp2_max_alarm Temperature critical max alarm
================= ========================================
diff --git a/drivers/hwmon/pmbus/adp1050.c b/drivers/hwmon/pmbus/adp1050.c
index ef46c880b168bd0378030fda2397d075221f3723..353758a6ffd69e33203e8d1447accf2c75ebecd5 100644
--- a/drivers/hwmon/pmbus/adp1050.c
+++ b/drivers/hwmon/pmbus/adp1050.c
@@ -23,19 +23,75 @@ static struct pmbus_driver_info adp1050_info = {
| PMBUS_HAVE_STATUS_TEMP,
};
+static struct pmbus_driver_info adp1051_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = linear,
+ .format[PSC_CURRENT_IN] = linear,
+ .format[PSC_TEMPERATURE] = linear,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_TEMP
+ | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_STATUS_TEMP,
+};
+
+static struct pmbus_driver_info adp1055_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = linear,
+ .format[PSC_CURRENT_IN] = linear,
+ .format[PSC_TEMPERATURE] = linear,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3
+ | PMBUS_HAVE_POUT
+ | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_STATUS_TEMP,
+};
+
+static struct pmbus_driver_info ltp8800_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = linear,
+ .format[PSC_CURRENT_IN] = linear,
+ .format[PSC_TEMPERATURE] = linear,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_TEMP
+ | PMBUS_HAVE_POUT
+ | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_STATUS_TEMP,
+};
+
static int adp1050_probe(struct i2c_client *client)
{
- return pmbus_do_probe(client, &adp1050_info);
+ struct pmbus_driver_info *info;
+
+ info = (struct pmbus_driver_info *)i2c_get_match_data(client);
+ if (!info)
+ return -ENODEV;
+
+ return pmbus_do_probe(client, info);
}
static const struct i2c_device_id adp1050_id[] = {
- {"adp1050"},
+ { .name = "adp1050", .driver_data = (kernel_ulong_t) &adp1050_info },
+ { .name = "adp1051", .driver_data = (kernel_ulong_t) &adp1051_info },
+ { .name = "adp1055", .driver_data = (kernel_ulong_t) &adp1055_info },
+ { .name = "ltp8800", .driver_data = (kernel_ulong_t) <p8800_info },
{}
};
MODULE_DEVICE_TABLE(i2c, adp1050_id);
static const struct of_device_id adp1050_of_match[] = {
- { .compatible = "adi,adp1050"},
+ { .compatible = "adi,adp1050", .data = &adp1050_info },
+ { .compatible = "adi,adp1051", .data = &adp1051_info },
+ { .compatible = "adi,adp1055", .data = &adp1055_info },
+ { .compatible = "adi,ltp8800", .data = <p8800_info },
{}
};
MODULE_DEVICE_TABLE(of, adp1050_of_match);
--
2.39.5
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v5 3/3] hwmon: (pmbus/adp1050): Add regulator support for ltp8800
2025-07-09 5:43 [PATCH v5 0/3] Add support for ADP1051/ADP1055 and LTP8800-1A/-2/-4A Cedric Encarnacion
2025-07-09 5:43 ` [PATCH v5 1/3] dt-bindings: hwmon: (pmbus/adp1050): Add adp1051, adp1055 and ltp8800 Cedric Encarnacion
2025-07-09 5:43 ` [PATCH v5 2/3] hwmon: (pmbus/adp1050): Add support for " Cedric Encarnacion
@ 2025-07-09 5:43 ` Cedric Encarnacion
2025-07-16 14:54 ` Guenter Roeck
2 siblings, 1 reply; 7+ messages in thread
From: Cedric Encarnacion @ 2025-07-09 5:43 UTC (permalink / raw)
To: Jean Delvare, Guenter Roeck, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Jonathan Corbet, Andy Shevchenko, Delphine CC Chiu,
Uwe Kleine-König
Cc: Radu Sabau, Alexis Czezar Torreno, linux-hwmon, devicetree,
linux-kernel, linux-doc, Cedric Encarnacion
Add regulator support for the single-channel LTP8800-1A/-2/-4A
150A/135A/200A DC/DC µModule Regulator.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
---
drivers/hwmon/pmbus/Kconfig | 9 +++++++++
drivers/hwmon/pmbus/adp1050.c | 10 ++++++++++
2 files changed, 19 insertions(+)
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 441f984a859dd935e5248793f1bf54204ce2c371..55e492452ce8115419718256de38dda1bd39fd9a 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -67,6 +67,15 @@ config SENSORS_ADP1050
This driver can also be built as a module. If so, the module will
be called adp1050.
+config SENSORS_ADP1050_REGULATOR
+ bool "Regulator support for ADP1050 and compatibles"
+ depends on SENSORS_ADP1050 && REGULATOR
+ help
+ If you say yes here you get regulator support for Analog Devices
+ LTP8800-1A, LTP8800-4A, and LTP8800-2. LTP8800 is a family of DC/DC
+ µModule regulators that can provide microprocessor power from 54V
+ power distribution architecture.
+
config SENSORS_BEL_PFE
tristate "Bel PFE Compatible Power Supplies"
help
diff --git a/drivers/hwmon/pmbus/adp1050.c b/drivers/hwmon/pmbus/adp1050.c
index 353758a6ffd69e33203e8d1447accf2c75ebecd5..0c23f53a287bee36d9b4873013556493d8964970 100644
--- a/drivers/hwmon/pmbus/adp1050.c
+++ b/drivers/hwmon/pmbus/adp1050.c
@@ -11,6 +11,12 @@
#include "pmbus.h"
+#if IS_ENABLED(CONFIG_SENSORS_ADP1050_REGULATOR)
+static const struct regulator_desc adp1050_reg_desc[] = {
+ PMBUS_REGULATOR_ONE("vout"),
+};
+#endif /* CONFIG_SENSORS_ADP1050_REGULATOR */
+
static struct pmbus_driver_info adp1050_info = {
.pages = 1,
.format[PSC_VOLTAGE_IN] = linear,
@@ -65,6 +71,10 @@ static struct pmbus_driver_info ltp8800_info = {
| PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_STATUS_INPUT
| PMBUS_HAVE_STATUS_TEMP,
+#if IS_ENABLED(CONFIG_SENSORS_ADP1050_REGULATOR)
+ .num_regulators = 1,
+ .reg_desc = adp1050_reg_desc,
+#endif
};
static int adp1050_probe(struct i2c_client *client)
--
2.39.5
^ permalink raw reply related [flat|nested] 7+ messages in thread