[PATCH 06/10] Documentation: Detail permitted DT properties for the BU21013 Touch Screen

[Lee Jones <lee.jones@linaro.org>]

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
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 .../bindings/input/touchscreen/bu21013.txt         |   28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 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
new file mode 100644
index 0000000..51edc75
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
@@ -0,0 +1,28 @@
+* Rohm BU21013 Touch Screen
+
+Required properties:
+ - compatible           : "stericsson,bu21013_tp"
+ - reg                  :  I2C device address
+
+Optional properties:
+touch-gpio              : GPIO pin registering a touch event
+<supply_name>-supply	: Phandle to a regulator supply
+stericsson,touch-max-x 	: Maximum outward permitted limit in the X axis
+stericsson,touch-max-y	: Maximum outward permitted limit in the Y axis
+stericsson,flip-x	: Flip touch coordinates on the X axis
+stericsson,flip-y	: Flip touch coordinates on the Y axis
+
+Example:
+
+	i2c@80110000 {
+		bu21013_tp@0x5c {
+			compatible = "bu21013_tp";
+			reg = <0x5c>;
+			touch-gpio = <&gpio2 20 0x4>;
+			avdd-supply = <&ab8500_ldo_aux1_reg>;
+
+			stericsson,touch-max-x = <384>;
+			stericsson,touch-max-y = <704>;
+			stricsson,flip-y;
+		};
+	};
-- 
1.7.9.5