xref: /linux/Documentation/devicetree/bindings/input/ti,tca8418.yaml (revision ec2e0fb07d789976c601bec19ecced7a501c3705) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/ti,tca8418.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: TI TCA8418 I2C/SMBus keypad scanner
8
9maintainers:
10  - Frank Li <Frank.Li@nxp.com>
11
12properties:
13  compatible:
14    enum:
15      - ti,tca8418
16
17  reg:
18    maxItems: 1
19
20  interrupts:
21    maxItems: 1
22
23required:
24  - compatible
25  - reg
26  - interrupts
27
28allOf:
29  - $ref: matrix-keymap.yaml#
30
31unevaluatedProperties: false
32
33examples:
34  - |
35    #include <dt-bindings/input/input.h>
36    #include <dt-bindings/interrupt-controller/irq.h>
37
38    i2c {
39        #address-cells = <1>;
40        #size-cells = <0>;
41
42        keypad@34 {
43            compatible = "ti,tca8418";
44            reg = <0x34>;
45            interrupt-parent = <&gpio5>;
46            interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
47            keypad,num-rows = <4>;
48            keypad,num-columns = <4>;
49            linux,keymap = < MATRIX_KEY(0x00, 0x01, BTN_0)
50                             MATRIX_KEY(0x00, 0x00, BTN_1)
51                             MATRIX_KEY(0x01, 0x01, BTN_2)
52                             MATRIX_KEY(0x01, 0x00, BTN_3)
53                             MATRIX_KEY(0x02, 0x00, BTN_4)
54                             MATRIX_KEY(0x00, 0x03, BTN_5)
55                             MATRIX_KEY(0x00, 0x02, BTN_6)
56                             MATRIX_KEY(0x01, 0x03, BTN_7)
57                             MATRIX_KEY(0x01, 0x02, BTN_8)
58                             MATRIX_KEY(0x02, 0x02, BTN_9)
59            >;
60        };
61    };
62