LXR linux/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml

   1# SPDX-License-Identifier: GPL-2.0
   2%YAML 1.2
   3---
   4$id: http://devicetree.org/schemas/input/allwinner,sun4i-a10-lradc-keys.yaml#
   5$schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7title: Allwinner A10 LRADC Device Tree Bindings
   8
   9maintainers:
  10  - Chen-Yu Tsai <wens@csie.org>
  11  - Maxime Ripard <mripard@kernel.org>
  12
  13properties:
  14  compatible:
  15    oneOf:
  16      - const: allwinner,sun4i-a10-lradc-keys
  17      - const: allwinner,sun8i-a83t-r-lradc
  18      - items:
  19          - const: allwinner,sun50i-a64-lradc
  20          - const: allwinner,sun8i-a83t-r-lradc
  21
  22  reg:
  23    maxItems: 1
  24
  25  interrupts:
  26    maxItems: 1
  27
  28  vref-supply:
  29    description:
  30      Regulator for the LRADC reference voltage
  31
  32  wakeup-source: true
  33
  34patternProperties:
  35  "^button-[0-9]+$":
  36    type: object
  37    properties:
  38      label:
  39        $ref: /schemas/types.yaml#/definitions/string
  40        description: Descriptive name of the key
  41
  42      linux,code:
  43        $ref: /schemas/types.yaml#/definitions/uint32
  44        description: Keycode to emit
  45
  46      channel:
  47        $ref: /schemas/types.yaml#/definitions/uint32
  48        enum: [0, 1]
  49        description: ADC Channel this key is attached to
  50
  51      voltage:
  52        $ref: /schemas/types.yaml#/definitions/uint32
  53        description:
  54          Voltage in microvolts at LRADC input when this key is
  55          pressed
  56
  57    required:
  58      - label
  59      - linux,code
  60      - channel
  61      - voltage
  62
  63    additionalProperties: false
  64
  65required:
  66  - compatible
  67  - reg
  68  - interrupts
  69  - vref-supply
  70
  71additionalProperties: false
  72
  73examples:
  74  - |
  75    lradc: lradc@1c22800 {
  76        compatible = "allwinner,sun4i-a10-lradc-keys";
  77        reg = <0x01c22800 0x100>;
  78        interrupts = <31>;
  79        vref-supply = <&reg_vcc3v0>;
  80
  81        button-191 {
  82            label = "Volume Up";
  83            linux,code = <115>;
  84            channel = <0>;
  85            voltage = <191274>;
  86        };
  87
  88        button-392 {
  89            label = "Volume Down";
  90            linux,code = <114>;
  91            channel = <0>;
  92            voltage = <392644>;
  93        };
  94    };
  95
  96...
  97