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Commit fb647002 authored by Lee Jones's avatar Lee Jones
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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: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent ab196b41

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;

		};

	};