Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[can-eth-gw-linux.git] / Documentation / devicetree / bindings / input / touchscreen / bu21013.txt

diff --git a/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt b/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
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+* Rohm BU21013 Touch Screen
+
+Required properties:
+ - compatible              : "rohm,bu21013_tp"
+ - reg                     :  I2C device address
+
+Optional properties:
+ - touch-gpio              : GPIO pin registering a touch event
+ - <supply_name>-supply    : Phandle to a regulator supply
+ - rohm,touch-max-x        : Maximum outward permitted limit in the X axis
+ - rohm,touch-max-y        : Maximum outward permitted limit in the Y axis
+ - rohm,flip-x             : Flip touch coordinates on the X axis
+ - rohm,flip-y             : Flip touch coordinates on the Y axis
+
+Example:
+
+       i2c@80110000 {
+               bu21013_tp@0x5c {
+                       compatible = "rohm,bu21013_tp";
+                       reg = <0x5c>;
+                       touch-gpio = <&gpio2 20 0x4>;
+                       avdd-supply = <&ab8500_ldo_aux1_reg>;
+
+                       rohm,touch-max-x = <384>;
+                       rohm,touch-max-y = <704>;
+                       rohm,flip-y;
+               };
+       };