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3e5f73a062
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>
124 lines
4.1 KiB
ReStructuredText
124 lines
4.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver adp1050
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=====================
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Supported chips:
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* Analog Devices ADP1050
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Prefix: 'adp1050'
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Addresses scanned: I2C 0x70 - 0x77
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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>
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Description
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-----------
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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, 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. 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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-----------
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This driver does not auto-detect devices. You will have to instantiate
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the devices explicitly.
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Please see Documentation/i2c/instantiating-devices.rst for details.
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Platform data support
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---------------------
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The driver supports standard PMBus driver platform data.
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Sysfs Attributes
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----------------
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================= ========================================
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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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================= ========================================
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