^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) * TWL4030's Keypad Controller device tree bindings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) TWL4030's Keypad controller is used to interface a SoC with a matrix-type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) keypad device. The keypad controller supports multiple row and column lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) A key can be placed at each intersection of a unique row and a unique column.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) The keypad controller can sense a key-press and key-release and report the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) event using a interrupt to the cpu.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) This binding is based on the matrix-keymap binding with the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * keypad,num-rows and keypad,num-columns are required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Required SoC Specific Properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) - compatible: should be one of the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) - "ti,twl4030-keypad": For controllers compatible with twl4030 keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) - interrupt: should be one of the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) - <1>: For controllers compatible with twl4030 keypad controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) twl_keypad: keypad {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) compatible = "ti,twl4030-keypad";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) interrupts = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) keypad,num-rows = <8>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) keypad,num-columns = <8>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };