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authorMike Looijmans <mike.looijmans@topic.nl>2016-08-22 09:44:32 +0300
committerGuenter Roeck <linux@roeck-us.net>2016-09-09 07:34:17 +0300
commit88de8e1d43e2a1c591e9fd261d0443826c7bebee (patch)
tree5d92cb0e1ed58a32cd46b9be0f9ac7a1effb1613 /Documentation/devicetree/bindings/hwmon
parentd5f3f6c8123388a6f978f2593cfe0e8ba8c30801 (diff)
downloadlinux-88de8e1d43e2a1c591e9fd261d0443826c7bebee.tar.xz
hwmon: (max6650) Add devicetree support documentation
This adds the devicetree binding documentation for the max6650 fan controller. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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+Bindings for MAX6651 and MAX6650 I2C fan controllers
+
+Reference:
+[1] https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf
+
+Required properties:
+- compatible : One of "maxim,max6650" or "maxim,max6651"
+- reg : I2C address, one of 0x1b, 0x1f, 0x4b, 0x48.
+
+Optional properties, default is to retain the chip's current setting:
+- maxim,fan-microvolt : The supply voltage of the fan, either 5000000 uV or
+ 12000000 uV.
+- maxim,fan-prescale : Pre-scaling value, as per datasheet [1]. Lower values
+ allow more fine-grained control of slower fans.
+ Valid: 1, 2, 4, 8, 16.
+
+Example:
+ fan-max6650: max6650@1b {
+ reg = <0x1b>;
+ compatible = "maxim,max6650";
+ maxim,fan-microvolt = <12000000>;
+ maxim,fan-prescale = <4>;
+ };