xref: /linux/Documentation/devicetree/bindings/input/nxp,lpc3220-key.yaml (revision d8d2b1f81530988abe2e2bfaceec1c5d30b9a0b4) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/nxp,lpc3220-key.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP LPC32xx Key Scan Interface
8
9maintainers:
10  - Frank Li <Frank.Li@nxp.com>
11
12properties:
13  compatible:
14    const: nxp,lpc3220-key
15
16  reg:
17    maxItems: 1
18
19  interrupts:
20    maxItems: 1
21
22  clocks:
23    maxItems: 1
24
25  nxp,debounce-delay-ms:
26    description: Debounce delay in ms
27
28  nxp,scan-delay-ms:
29    description: Repeated scan period in ms
30
31required:
32  - compatible
33  - reg
34  - interrupts
35  - clocks
36  - nxp,debounce-delay-ms
37  - nxp,scan-delay-ms
38  - linux,keymap
39
40allOf:
41  - $ref: matrix-keymap.yaml#
42
43unevaluatedProperties: false
44
45examples:
46  - |
47    #include <dt-bindings/interrupt-controller/irq.h>
48    #include <dt-bindings/clock/lpc32xx-clock.h>
49
50    key@40050000 {
51        compatible = "nxp,lpc3220-key";
52        reg = <0x40050000 0x1000>;
53        clocks = <&clk LPC32XX_CLK_KEY>;
54        interrupt-parent = <&sic1>;
55        interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
56        keypad,num-rows = <1>;
57        keypad,num-columns = <1>;
58        nxp,debounce-delay-ms = <3>;
59        nxp,scan-delay-ms = <34>;
60        linux,keymap = <0x00000002>;
61    };
62