Revision ddbc53b0f075fb2cd86c312bc3473d3f55e57198 authored by Alexander Potapenko on 01 September 2017, 18:08:18 UTC, committed by Alexander Potapenko on 28 August 2018, 10:29:12 UTC
Introduced by https://github.com/torvalds/linux/commit/6bfe04255d5ed5643ee4c2d9b09b337398f8cb6a TODO(glider): report upstream
1 parent 013c9f9
wm831x
Kernel driver wm831x-hwmon
==========================
Supported chips:
* Wolfson Microelectronics WM831x PMICs
Prefix: 'wm831x'
Datasheet:
http://www.wolfsonmicro.com/products/WM8310
http://www.wolfsonmicro.com/products/WM8311
http://www.wolfsonmicro.com/products/WM8312
Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
Description
-----------
The WM831x series of PMICs include an AUXADC which can be used to
monitor a range of system operating parameters, including the voltages
of the major supplies within the system. Currently the driver provides
reporting of all the input values but does not provide any alarms.
Voltage Monitoring
------------------
Voltages are sampled by a 12 bit ADC. Voltages in millivolts are 1.465
times the ADC value.
Temperature Monitoring
----------------------
Temperatures are sampled by a 12 bit ADC. Chip and battery temperatures
are available. The chip temperature is calculated as:
Degrees celsius = (512.18 - data) / 1.0983
while the battery temperature calculation will depend on the NTC
thermistor component.
Computing file changes ...
