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authorLiu Ying <Ying.Liu@freescale.com>2013-01-03 12:25:46 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-01-03 12:41:31 -0800
commit0e14235e6cfbc9b7a546d38b51c4e7ffdab41045 (patch)
tree54cdd6193b45b34b5c2595dee47de9ab0c3490ab /Documentation/devicetree/bindings/input
parent03c86ee1548a6ffecc65cf83b0a2d2774fed2f1d (diff)
Input: imx_keypad - add device tree support
This patch adds device tree support for imx keypad driver. Signed-off-by: Liu Ying <Ying.Liu@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
-rw-r--r--Documentation/devicetree/bindings/input/imx-keypad.txt53
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diff --git a/Documentation/devicetree/bindings/input/imx-keypad.txt b/Documentation/devicetree/bindings/input/imx-keypad.txt
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+* Freescale i.MX Keypad Port(KPP) device tree bindings
+
+The KPP is designed to interface with a keypad matrix with 2-point contact
+or 3-point contact keys. The KPP is designed to simplify the software task
+of scanning a keypad matrix. The KPP is capable of detecting, debouncing,
+and decoding one or multiple keys pressed simultaneously on a keypad.
+
+Required SoC Specific Properties:
+- compatible: Should be "fsl,<soc>-kpp".
+
+- reg: Physical base address of the KPP and length of memory mapped
+ region.
+
+- interrupts: The KPP interrupt number to the CPU(s).
+
+- clocks: The clock provided by the SoC to the KPP. Some SoCs use dummy
+clock(The clock for the KPP is provided by the SoCs automatically).
+
+Required Board Specific Properties:
+- pinctrl-names: The definition can be found at
+pinctrl/pinctrl-bindings.txt.
+
+- pinctrl-0: The definition can be found at
+pinctrl/pinctrl-bindings.txt.
+
+- linux,keymap: The definition can be found at
+bindings/input/matrix-keymap.txt.
+
+Example:
+kpp: kpp@73f94000 {
+ compatible = "fsl,imx51-kpp", "fsl,imx21-kpp";
+ reg = <0x73f94000 0x4000>;
+ interrupts = <60>;
+ clocks = <&clks 0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_kpp_1>;
+ linux,keymap = <0x00000067 /* KEY_UP */
+ 0x0001006c /* KEY_DOWN */
+ 0x00020072 /* KEY_VOLUMEDOWN */
+ 0x00030066 /* KEY_HOME */
+ 0x0100006a /* KEY_RIGHT */
+ 0x01010069 /* KEY_LEFT */
+ 0x0102001c /* KEY_ENTER */
+ 0x01030073 /* KEY_VOLUMEUP */
+ 0x02000040 /* KEY_F6 */
+ 0x02010042 /* KEY_F8 */
+ 0x02020043 /* KEY_F9 */
+ 0x02030044 /* KEY_F10 */
+ 0x0300003b /* KEY_F1 */
+ 0x0301003c /* KEY_F2 */
+ 0x0302003d /* KEY_F3 */
+ 0x03030074>; /* KEY_POWER */
+};

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