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Based on kernel version 3.16. Page generated on 2014-08-06 21:39 EST.

1	Kernel driver wm831x-hwmon
2	==========================
3	
4	Supported chips:
5	  * Wolfson Microelectronics WM831x PMICs
6	    Prefix: 'wm831x'
7	    Datasheet:
8		http://www.wolfsonmicro.com/products/WM8310
9		http://www.wolfsonmicro.com/products/WM8311
10		http://www.wolfsonmicro.com/products/WM8312
11	
12	Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
13	
14	Description
15	-----------
16	
17	The WM831x series of PMICs include an AUXADC which can be used to
18	monitor a range of system operating parameters, including the voltages
19	of the major supplies within the system.  Currently the driver provides
20	reporting of all the input values but does not provide any alarms.
21	
22	Voltage Monitoring
23	------------------
24	
25	Voltages are sampled by a 12 bit ADC.  Voltages in millivolts are 1.465
26	times the ADC value.
27	
28	Temperature Monitoring
29	----------------------
30	
31	Temperatures are sampled by a 12 bit ADC.  Chip and battery temperatures
32	are available.  The chip temperature is calculated as:
33	
34		Degrees celsius = (512.18 - data) / 1.0983
35	
36	while the battery temperature calculation will depend on the NTC
37	thermistor component.
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