[deliverable/linux.git] / Documentation / devicetree / bindings / input / twl4030-keypad.txt

* TWL4030's Keypad Controller device tree bindings

TWL4030's Keypad controller is used to interface a SoC with a matrix-type
keypad device. The keypad controller supports multiple row and column lines.
A key can be placed at each intersection of a unique row and a unique column.
The keypad controller can sense a key-press and key-release and report the
event using a interrupt to the cpu.

This binding is based on the matrix-keymap binding with the following
changes:

 * keypad,num-rows and keypad,num-columns are required.

Required SoC Specific Properties:
- compatible: should be one of the following
   - "ti,twl4030-keypad": For controllers compatible with twl4030 keypad
      controller.
- interrupt: should be one of the following
   - <1>: For controllers compatible with twl4030 keypad controller.

Example:
	twl_keypad: keypad {
		compatible = "ti,twl4030-keypad";
		interrupts = <1>;
		keypad,num-rows = <8>;
		keypad,num-columns = <8>;
	};
Commit	Line	Data
7abf38d6 SR	1	* TWL4030's Keypad Controller device tree bindings
	2
	3	TWL4030's Keypad controller is used to interface a SoC with a matrix-type
	4	keypad device. The keypad controller supports multiple row and column lines.
	5	A key can be placed at each intersection of a unique row and a unique column.
	6	The keypad controller can sense a key-press and key-release and report the
	7	event using a interrupt to the cpu.
	8
	9	This binding is based on the matrix-keymap binding with the following
	10	changes:
	11
	12	* keypad,num-rows and keypad,num-columns are required.
	13
	14	Required SoC Specific Properties:
	15	- compatible: should be one of the following
	16	- "ti,twl4030-keypad": For controllers compatible with twl4030 keypad
	17	controller.
	18	- interrupt: should be one of the following
	19	- <1>: For controllers compatible with twl4030 keypad controller.
	20
	21	Example:
	22	twl_keypad: keypad {
	23	compatible = "ti,twl4030-keypad";
	24	interrupts = <1>;
	25	keypad,num-rows = <8>;
	26	keypad,num-columns = <8>;
	27	};