xref: /freebsd/sys/contrib/device-tree/Bindings/input/fsl,mpr121-touchkey.yaml (revision dd41de95a84d979615a2ef11df6850622bf6184e) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/fsl,mpr121-touchkey.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale MPR121 capacitive touch sensor controller
8
9maintainers:
10  - Dmitry Torokhov <dmitry.torokhov@gmail.com>
11
12description: |
13  The MPR121 supports up to 12 completely independent electrodes/capacitance
14  sensing inputs in which 8 are multifunctional for LED driving and GPIO.
15  https://www.nxp.com/docs/en/data-sheet/MPR121.pdf
16
17allOf:
18  - $ref: input.yaml#
19
20anyOf:
21  - required: [ interrupts ]
22  - required: [ poll-interval ]
23
24properties:
25  compatible:
26    const: fsl,mpr121-touchkey
27
28  reg:
29    maxItems: 1
30
31  interrupts:
32    maxItems: 1
33
34  vdd-supply:
35    maxItems: 1
36
37  linux,keycodes:
38    minItems: 1
39    maxItems: 12
40
41  wakeup-source:
42    description: Use any event on keypad as wakeup event.
43    type: boolean
44
45required:
46  - compatible
47  - reg
48  - vdd-supply
49  - linux,keycodes
50
51unevaluatedProperties: false
52
53examples:
54  - |
55    // Example with interrupts
56    #include "dt-bindings/input/input.h"
57    i2c {
58        #address-cells = <1>;
59        #size-cells = <0>;
60
61        mpr121@5a {
62            compatible = "fsl,mpr121-touchkey";
63            reg = <0x5a>;
64            interrupt-parent = <&gpio1>;
65            interrupts = <28 2>;
66            autorepeat;
67            vdd-supply = <&ldo4_reg>;
68            linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
69                             <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
70                             <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
71        };
72    };
73
74  - |
75    // Example with polling
76    #include "dt-bindings/input/input.h"
77    i2c {
78        #address-cells = <1>;
79        #size-cells = <0>;
80
81        mpr121@5a {
82            compatible = "fsl,mpr121-touchkey";
83            reg = <0x5a>;
84            poll-interval = <20>;
85            autorepeat;
86            vdd-supply = <&ldo4_reg>;
87            linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
88                             <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
89                             <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
90        };
91    };
92