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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
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Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+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.