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c66c5bda7f
Add hardware monitoring and regulator support for LT3074. The LT3074 is an ultrafast, ultralow noise 3A, 5.5V dropout linear regulator. The PMBus serial interface allows telemetry for input/output voltage, bias voltage, output current, and die temperature. Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com> Link: https://lore.kernel.org/r/20250421-upstream-lt3074-v3-2-71636322f9fe@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
73 lines
2.1 KiB
ReStructuredText
73 lines
2.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver lt3074
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====================
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Supported chips:
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* Analog Devices LT3074
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Prefix: 'lt3074'
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Addresses scanned: -
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Datasheet: https://www.analog.com/en/products/lt3074.html
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Authors: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
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Description
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-----------
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This driver supports hardware monitoring for Analog Devices LT3074 Linear
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Regulator with PMBus interface.
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The LT3074 is a low voltage, ultra-low noise and ultra-fast transient
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response linear regulator with PMBus serial interface. PMBus telemetry
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feature provides information regarding the output voltage and current,
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input voltage, bias voltage and die temperature.
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The driver is a client driver to the core PMBus driver. Please see
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Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
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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. Please see Documentation/i2c/instantiating-devices.rst
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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 entries
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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_max Input overvoltage warning limit
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in1_max_alarm Input overvoltage warning status
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in1_min Input undervoltage warning limit
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in1_min_alarm Input undervoltage warning status
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in2_label "vmon"
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in2_input Measured bias voltage
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in2_max Bias overvoltage warning limit
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in2_min Bias undervoltage warning limit
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in3_label "vout1"
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in3_input Measured output voltage
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in3_max Output overvoltage warning limit
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in3_max_alarm Output overvoltage warning status
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in3_min Output undervoltage warning limit
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in3_min_alarm Output undervoltage warning status
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curr1_label "iout1"
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curr1_input Measured output current.
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curr1_crit Output overcurrent fault limit
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curr1_crit_alarm Output overcurrent fault status
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temp1_input Measured temperature
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temp1_max Maximum temperature limit
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temp1_max_alarm Overtemperature warning status
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======================= =======================================================
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