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Ziming Zhu
efd053e3f6
Document the supported sysfs attributes for the Silergy SQ24860 PMBus hwmon driver. Signed-off-by: Ziming Zhu <ziming.zhu@silergycorp.com> Link: https://lore.kernel.org/r/20260612030304.5165-4-zmzhu0630@163.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
97 lines
3.7 KiB
ReStructuredText
97 lines
3.7 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver sq24860
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=====================
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Supported chips:
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* Silergy SQ24860
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Prefix: 'sq24860'
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Author:
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Ziming Zhu <ziming.zhu@silergycorp.com>
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Description
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------------
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This driver implements support for the Silergy SQ24860 eFuse. The device is an
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integrated circuit protection and power management device with a PMBus
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interface.
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The device supports direct format for reading input voltage, output voltage,
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auxiliary voltage, input current, input power, and temperature.
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The current and power measurement scale depends on the resistor connected
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between the IMON pin and ground. The resistor value can be configured with the
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``silergy,rimon-micro-ohms`` device tree property. See
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``Documentation/devicetree/bindings/hwmon/pmbus/silergy,sq24860.yaml`` for details.
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Due to the specificities of the chip, all history reset attributes are tied
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together. Resetting the history of one sensor resets the history of all sensors.
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Sysfs entries
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-------------
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The following attributes are supported. Limits are read-write; all other
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attributes are read-only.
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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_average Average measured input voltage.
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in1_min Minimum input voltage limit.
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in1_lcrit Critical low input voltage limit.
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in1_max Maximum input voltage limit.
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in1_crit Critical high input voltage limit.
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in1_min_alarm Input voltage low warning alarm.
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in1_lcrit_alarm Input voltage low fault alarm.
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in1_max_alarm Input voltage high warning alarm.
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in1_crit_alarm Input voltage high fault alarm.
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in1_highest Historical maximum input voltage.
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in1_lowest Historical minimum input voltage.
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in1_reset_history Write any value to reset history.
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in2_label "vmon"
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in2_input Measured auxiliary input voltage.
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in3_label "vout1"
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in3_input Measured output voltage.
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in3_average Average measured output voltage.
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in3_min Minimum output voltage limit.
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in3_min_alarm Output voltage low alarm.
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in3_lowest Historical minimum output voltage.
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in3_reset_history Write any value to reset history.
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curr1_label "iin"
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curr1_input Measured input current.
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curr1_average Average measured input current.
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curr1_max Maximum input current warning limit.
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curr1_crit Critical input over-current fault limit.
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curr1_max_alarm Input current warning alarm.
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curr1_crit_alarm Input over-current fault alarm.
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curr1_highest Historical maximum input current.
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curr1_reset_history Write any value to reset history.
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power1_label "pin"
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power1_input Measured input power.
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power1_average Average measured input power.
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power1_max Maximum input power warning limit.
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power1_alarm Input power warning alarm.
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power1_input_highest Historical maximum input power.
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power1_reset_history Write any value to reset history.
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temp1_input Measured temperature.
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temp1_average Average measured temperature.
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temp1_max Maximum temperature warning limit.
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temp1_crit Critical temperature fault limit.
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temp1_max_alarm Temperature warning alarm.
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temp1_crit_alarm Temperature fault alarm.
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temp1_highest Historical maximum temperature.
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temp1_reset_history Write any value to reset history.
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samples Number of samples used for average values.
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======================= ======================================================
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