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docs: hwmon: add docs for the NXP MC34VR500 PMIC

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Add documentation for the NXP MC34VR500 PMIC.

Signed-off-by: Mario Kicherer <dev@kicherer.org>
Link: https://lore.kernel.org/r/20230118123019.3041303-3-dev@kicherer.org
[groeck: Added to index]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Mario Kicherer 2023-01-18 13:30:18 +01:00 committed by Guenter Roeck
parent 363ab25324
commit a66c914791
2 changed files with 33 additions and 0 deletions
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Documentation/hwmon/index.rst
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@ -145,6 +145,7 @@ Hardware Monitoring Kernel Drivers
max6697
max8688
mc13783-adc
mc34vr500
mcp3021
menf21bmc
mlxreg-fan

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Documentation/hwmon/mc34vr500.rst Normal file
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@ -0,0 +1,32 @@
.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver mc34vr500
=======================
Supported Chips:
* NXP MC34VR500
Prefix: 'mc34vr500'
Datasheet: https://www.nxp.com/docs/en/data-sheet/MC34VR500.pdf
Author: Mario Kicherer <dev@kicherer.org>
Description
-----------
This driver implements initial support for the NXP MC34VR500 PMIC. The MC34VR500
monitors the temperature, input voltage and output currents and provides
corresponding alarms. For the temperature, the chip can send interrupts if
the temperature rises above one of the following values: 110°, 120°, 125° and
130° Celsius. For the input voltage, an interrupt is sent when the voltage
drops below 2.8V.
Currently, this driver only implements the input voltage and temperature
alarms. The interrupts are mapped as follows:
<= 2.8V -> in0_min_alarm
>110°c -> temp1_max_alarm
>120°c -> temp1_crit_alarm
>130°c -> temp1_emergency_alarm