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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-07-20 15:43:45 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2009-09-17 11:46:51 +0400
commitfb6c023a2b845df1ec383b74644ac35a4bbb76b6 (patch)
treedbb8acdaa37c8ce80ee702a55f672476b6e45444 /Documentation/hwmon
parent39b1772a24126d74699cea623f96b50ca6b6f08f (diff)
downloadlinux-fb6c023a2b845df1ec383b74644ac35a4bbb76b6.tar.xz
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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+Kernel driver wm8350-hwmon
+==========================
+
+Supported chips:
+ * Wolfson Microelectronics WM835x PMICs
+ Prefix: 'wm8350'
+ Datasheet:
+ http://www.wolfsonmicro.com/products/WM8350
+ http://www.wolfsonmicro.com/products/WM8351
+ http://www.wolfsonmicro.com/products/WM8352
+
+Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
+
+Description
+-----------
+
+The WM835x 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
+simple access to these major supplies.
+
+Voltage Monitoring
+------------------
+
+Voltages are sampled by a 12 bit ADC. For the internal supplies the ADC
+is referenced to the system VRTC.