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hwmon: (pmbus/adp1050) Add support for adp1051, adp1055 and ltp8800
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> Link: https://lore.kernel.org/r/20250709-adp1051-v5-2-539254692252@analog.com [groeck: Dropped unnecessaary spaces after type casts] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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‎Documentation/hwmon/adp1050.rst‎

Lines changed: 65 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -13,6 +13,32 @@ Supported chips:
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Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1050.pdf
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* Analog Devices ADP1051
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Prefix: 'adp1051'
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Addresses scanned: I2C 0x70 - 0x77
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Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1051.pdf
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* Analog Devices ADP1055
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Prefix: 'adp1055'
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Addresses scanned: I2C 0x4B - 0x77
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Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1055.pdf
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* Analog Devices LTP8800-1A/-2/-4A
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Prefix: 'ltp8800'
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Addresses scanned: -
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Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-1A.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-2.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-4A.pdf
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Authors:
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- Radu Sabau <radu.sabau@analog.com>
@@ -21,14 +47,17 @@ Authors:
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Description
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-----------
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This driver supprts hardware monitoring for Analog Devices ADP1050 Digital
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Controller for Isolated Power Supply with PMBus interface.
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This driver supports hardware monitoring for Analog Devices ADP1050, ADP1051,
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and ADP1055 Digital Controller for Isolated Power Supply with PMBus interface,
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and the LTP8800 step-down μModule regulators.
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The ADP1050 is an advanced digital controller with a PMBus™
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The ADP1050, ADP1051, and ADP1055 are advanced digital controllers with PMBus™
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interface targeting high density, high efficiency dc-to-dc power
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conversion used to monitor system temperatures, voltages and currents.
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Through the PMBus interface, the device can monitor input/output voltages,
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input current and temperature.
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conversion used to monitor system temperatures, voltages and currents. The
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LTP8800 is a family of step-down μModule regulators that provides microprocessor
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core voltage from 54V power distribution architecture. Through the PMBus
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interface, the device can monitor input/output voltages, input current and
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temperature.
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Usage Notes
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-----------
@@ -49,16 +78,46 @@ Sysfs Attributes
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in1_label "vin"
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in1_input Measured input voltage
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in1_alarm Input voltage alarm
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in1_crit Critical maximum input voltage
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in1_crit_alarm Input voltage high alarm
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in1_lcrit Critical minimum input voltage
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in1_lcrit_alarm Input voltage critical low alarm
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in2_label "vout1"
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in2_input Measured output voltage
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in2_crit Critical maximum output voltage
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in2_crit_alarm Output voltage high alarm
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in2_lcrit Critical minimum output voltage
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in2_lcrit_alarm Output voltage critical low alarm
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in2_max Critical maximum output voltage
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in2_max_alarm Output voltage critical max alarm
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in2_min Critical minimum output voltage
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in2_min_alarm Output voltage critical min alarm
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curr1_label "iin"
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curr1_input Measured input current.
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curr1_alarm Input current alarm
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curr1_crit Critical maximum input current
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curr1_crit_alarm Input current high alarm
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curr2_label "iout1"
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curr2_input Measured output current
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curr2_alarm Output current alarm
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curr2_crit Critical maximum output current
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curr2_crit_alarm Output current high alarm
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curr2_lcrit Critical minimum output current
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curr2_lcrit_alarm Output current critical low alarm
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curr2_max Critical maximum output current
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curr2_max_alarm Output current critical max alarm
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power1_label "pout1"
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power1_input Measured output power
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power1_crit Critical maximum output power
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power1_crit_alarm Output power high alarm
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temp1_input Measured temperature
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temp1_crit Critical high temperature
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temp1_crit_alarm Chip temperature critical high alarm
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temp1_max Critical maximum temperature
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temp1_max_alarm Temperature critical max alarm
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temp2_input Measured temperature
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temp2_crit Critical high temperature
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temp2_crit_alarm Chip temperature critical high alarm
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temp2_max Critical maximum temperature
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temp2_max_alarm Temperature critical max alarm
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================= ========================================

‎drivers/hwmon/pmbus/adp1050.c‎

Lines changed: 59 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -23,19 +23,75 @@ static struct pmbus_driver_info adp1050_info = {
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| PMBUS_HAVE_STATUS_TEMP,
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};
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static struct pmbus_driver_info adp1051_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
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| PMBUS_HAVE_TEMP
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| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_STATUS_TEMP,
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};
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static struct pmbus_driver_info adp1055_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
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| PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3
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| PMBUS_HAVE_POUT
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| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_STATUS_TEMP,
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};
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static struct pmbus_driver_info ltp8800_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT
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| PMBUS_HAVE_TEMP
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| PMBUS_HAVE_POUT
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| PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_STATUS_TEMP,
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};
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static int adp1050_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &adp1050_info);
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struct pmbus_driver_info *info;
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info = (struct pmbus_driver_info *)i2c_get_match_data(client);
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if (!info)
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return -ENODEV;
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return pmbus_do_probe(client, info);
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}
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static const struct i2c_device_id adp1050_id[] = {
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{"adp1050"},
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{ .name = "adp1050", .driver_data = (kernel_ulong_t)&adp1050_info },
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{ .name = "adp1051", .driver_data = (kernel_ulong_t)&adp1051_info },
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{ .name = "adp1055", .driver_data = (kernel_ulong_t)&adp1055_info },
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{ .name = "ltp8800", .driver_data = (kernel_ulong_t)&ltp8800_info },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, adp1050_id);
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static const struct of_device_id adp1050_of_match[] = {
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{ .compatible = "adi,adp1050"},
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{ .compatible = "adi,adp1050", .data = &adp1050_info },
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{ .compatible = "adi,adp1051", .data = &adp1051_info },
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{ .compatible = "adi,adp1055", .data = &adp1055_info },
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{ .compatible = "adi,ltp8800", .data = &ltp8800_info },
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{}
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};
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MODULE_DEVICE_TABLE(of, adp1050_of_match);

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