1 Kernel driver wm831x-hwmon
2 ==========================
5 * Wolfson Microelectronics WM831x PMICs
11 - http://www.wolfsonmicro.com/products/WM8310
12 - http://www.wolfsonmicro.com/products/WM8311
13 - http://www.wolfsonmicro.com/products/WM8312
15 Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
20 The WM831x series of PMICs include an AUXADC which can be used to
21 monitor a range of system operating parameters, including the voltages
22 of the major supplies within the system. Currently the driver provides
23 reporting of all the input values but does not provide any alarms.
28 Voltages are sampled by a 12 bit ADC. Voltages in millivolts are 1.465
31 Temperature Monitoring
32 ----------------------
34 Temperatures are sampled by a 12 bit ADC. Chip and battery temperatures
35 are available. The chip temperature is calculated as:
37 Degrees celsius = (512.18 - data) / 1.0983
39 while the battery temperature calculation will depend on the NTC