0001 * TI's Keypad Controller device tree bindings
0002
0003 TI's Keypad controller is used to interface a SoC with a matrix-type
0004 keypad device. The keypad controller supports multiple row and column lines.
0005 A key can be placed at each intersection of a unique row and a unique column.
0006 The keypad controller can sense a key-press and key-release and report the
0007 event using a interrupt to the cpu.
0008
0009 This binding is based on the matrix-keymap binding with the following
0010 changes:
0011
0012 keypad,num-rows and keypad,num-columns are required.
0013
0014 Required SoC Specific Properties:
0015 - compatible: should be one of the following
0016 - "ti,omap4-keypad": For controllers compatible with omap4 keypad
0017 controller.
0018
0019 Optional Properties specific to linux:
0020 - linux,keypad-no-autorepeat: do no enable autorepeat feature.
0021
0022 Example:
0023 keypad@4ae1c000{
0024 compatible = "ti,omap4-keypad";
0025 keypad,num-rows = <2>;
0026 keypad,num-columns = <8>;
0027 linux,keypad-no-autorepeat;
0028 };
