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authorLee Jones <lee.jones@linaro.org>2012-09-28 15:24:40 +0100
committerLee Jones <lee.jones@linaro.org>2012-11-01 13:02:13 +0100
commitfb647002e4b6393a1f552b2fe48ba88c50d1d6e4 (patch)
treec841b41f003286cc919e7ff505d795348b0e9ef0 /Documentation/devicetree/bindings/input/touchscreen
parentab196b4138fb9b3e6908c85eb4bf412d2a6753cd (diff)
Documentation: Detail permitted DT properties for the BU21013 Touch Screen
Here we apply required documentation for the Rohm BU21013 Touch Screen driver which describe available properties and how to use them. Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: linux-input@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/input/touchscreen')
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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;
+ };
+ };