1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun%YAML 1.2
3*4882a593Smuzhiyun---
4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/input/allwinner,sun4i-a10-lradc-keys.yaml#
5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml#
6*4882a593Smuzhiyun
7*4882a593Smuzhiyuntitle: Allwinner A10 LRADC Device Tree Bindings
8*4882a593Smuzhiyun
9*4882a593Smuzhiyunmaintainers:
10*4882a593Smuzhiyun  - Chen-Yu Tsai <wens@csie.org>
11*4882a593Smuzhiyun  - Maxime Ripard <mripard@kernel.org>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyunproperties:
14*4882a593Smuzhiyun  compatible:
15*4882a593Smuzhiyun    oneOf:
16*4882a593Smuzhiyun      - const: allwinner,sun4i-a10-lradc-keys
17*4882a593Smuzhiyun      - const: allwinner,sun8i-a83t-r-lradc
18*4882a593Smuzhiyun      - items:
19*4882a593Smuzhiyun          - const: allwinner,sun50i-a64-lradc
20*4882a593Smuzhiyun          - const: allwinner,sun8i-a83t-r-lradc
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun  reg:
23*4882a593Smuzhiyun    maxItems: 1
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun  interrupts:
26*4882a593Smuzhiyun    maxItems: 1
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun  vref-supply:
29*4882a593Smuzhiyun    description:
30*4882a593Smuzhiyun      Regulator for the LRADC reference voltage
31*4882a593Smuzhiyun
32*4882a593SmuzhiyunpatternProperties:
33*4882a593Smuzhiyun  "^button-[0-9]+$":
34*4882a593Smuzhiyun    type: object
35*4882a593Smuzhiyun    properties:
36*4882a593Smuzhiyun      label:
37*4882a593Smuzhiyun        $ref: /schemas/types.yaml#/definitions/string
38*4882a593Smuzhiyun        description: Descriptive name of the key
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun      linux,code:
41*4882a593Smuzhiyun        $ref: /schemas/types.yaml#/definitions/uint32
42*4882a593Smuzhiyun        description: Keycode to emit
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun      channel:
45*4882a593Smuzhiyun        $ref: /schemas/types.yaml#/definitions/uint32
46*4882a593Smuzhiyun        enum: [0, 1]
47*4882a593Smuzhiyun        description: ADC Channel this key is attached to
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun      voltage:
50*4882a593Smuzhiyun        $ref: /schemas/types.yaml#/definitions/uint32
51*4882a593Smuzhiyun        description:
52*4882a593Smuzhiyun          Voltage in microvolts at LRADC input when this key is
53*4882a593Smuzhiyun          pressed
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun    required:
56*4882a593Smuzhiyun      - label
57*4882a593Smuzhiyun      - linux,code
58*4882a593Smuzhiyun      - channel
59*4882a593Smuzhiyun      - voltage
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun    additionalProperties: false
62*4882a593Smuzhiyun
63*4882a593Smuzhiyunrequired:
64*4882a593Smuzhiyun  - compatible
65*4882a593Smuzhiyun  - reg
66*4882a593Smuzhiyun  - interrupts
67*4882a593Smuzhiyun  - vref-supply
68*4882a593Smuzhiyun
69*4882a593SmuzhiyunadditionalProperties: false
70*4882a593Smuzhiyun
71*4882a593Smuzhiyunexamples:
72*4882a593Smuzhiyun  - |
73*4882a593Smuzhiyun    lradc: lradc@1c22800 {
74*4882a593Smuzhiyun        compatible = "allwinner,sun4i-a10-lradc-keys";
75*4882a593Smuzhiyun        reg = <0x01c22800 0x100>;
76*4882a593Smuzhiyun        interrupts = <31>;
77*4882a593Smuzhiyun        vref-supply = <&reg_vcc3v0>;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun        button-191 {
80*4882a593Smuzhiyun            label = "Volume Up";
81*4882a593Smuzhiyun            linux,code = <115>;
82*4882a593Smuzhiyun            channel = <0>;
83*4882a593Smuzhiyun            voltage = <191274>;
84*4882a593Smuzhiyun        };
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun        button-392 {
87*4882a593Smuzhiyun            label = "Volume Down";
88*4882a593Smuzhiyun            linux,code = <114>;
89*4882a593Smuzhiyun            channel = <0>;
90*4882a593Smuzhiyun            voltage = <392644>;
91*4882a593Smuzhiyun        };
92*4882a593Smuzhiyun    };
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun...
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