1* TWL4030's Keypad Controller device tree bindings 2 3TWL4030's Keypad controller is used to interface a SoC with a matrix-type 4keypad device. The keypad controller supports multiple row and column lines. 5A key can be placed at each intersection of a unique row and a unique column. 6The keypad controller can sense a key-press and key-release and report the 7event using a interrupt to the cpu. 8 9This binding is based on the matrix-keymap binding with the following 10changes: 11 12 * keypad,num-rows and keypad,num-columns are required. 13 14Required 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 21Example: 22 twl_keypad: keypad { 23 compatible = "ti,twl4030-keypad"; 24 interrupts = <1>; 25 keypad,num-rows = <8>; 26 keypad,num-columns = <8>; 27 }; 28