# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/nxp,lpc3220-key.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP LPC32xx Key Scan Interface

maintainers:
  - Frank Li <Frank.Li@nxp.com>

properties:
  compatible:
    const: nxp,lpc3220-key

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  nxp,debounce-delay-ms:
    description: Debounce delay in ms

  nxp,scan-delay-ms:
    description: Repeated scan period in ms

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - nxp,debounce-delay-ms
  - nxp,scan-delay-ms
  - linux,keymap

allOf:
  - $ref: matrix-keymap.yaml#

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/clock/lpc32xx-clock.h>
 
    key@40050000 {
        compatible = "nxp,lpc3220-key";
        reg = <0x40050000 0x1000>;
        clocks = <&clk LPC32XX_CLK_KEY>;
        interrupt-parent = <&sic1>;
        interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
        keypad,num-rows = <1>;
        keypad,num-columns = <1>;
        nxp,debounce-delay-ms = <3>;
        nxp,scan-delay-ms = <34>;
        linux,keymap = <0x00000002>;
    };