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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-07-20 07:43:45 -0400
committerSamuel Ortiz <sameo@linux.intel.com>2009-09-17 03:46:51 -0400
commitfb6c023a2b845df1ec383b74644ac35a4bbb76b6 (patch)
treedbb8acdaa37c8ce80ee702a55f672476b6e45444 /Documentation/hwmon/wm8350
parent39b1772a24126d74699cea623f96b50ca6b6f08f (diff)
hwmon: Add WM835x PMIC hardware monitoring driver
This driver provides reporting of the status supply voltage rails of the WM835x series of PMICs via the hwmon API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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1Kernel driver wm8350-hwmon
2==========================
3
4Supported chips:
5 * Wolfson Microelectronics WM835x PMICs
6 Prefix: 'wm8350'
7 Datasheet:
8 http://www.wolfsonmicro.com/products/WM8350
9 http://www.wolfsonmicro.com/products/WM8351
10 http://www.wolfsonmicro.com/products/WM8352
11
12Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
13
14Description
15-----------
16
17The WM835x series of PMICs include an AUXADC which can be used to
18monitor a range of system operating parameters, including the voltages
19of the major supplies within the system. Currently the driver provides
20simple access to these major supplies.
21
22Voltage Monitoring
23------------------
24
25Voltages are sampled by a 12 bit ADC. For the internal supplies the ADC
26is referenced to the system VRTC.