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 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Allwinner A10 LRADC
   8
   9 maintainers:
  10   - Chen-Yu Tsai <wens@csie.org>
  11   - Maxime Ripard <mripard@kernel.org>
  12
  13 properties:
  14   compatible:
  15     oneOf:
  16       - const: allwinner,sun4i-a10-lradc-keys
  17       - const: allwinner,sun8i-a83t-r-lradc
  18       - items:
  19           - enum:
  20               - allwinner,suniv-f1c100s-lradc
  21               - allwinner,sun50i-a64-lradc
  22           - const: allwinner,sun8i-a83t-r-lradc
  23       - const: allwinner,sun50i-r329-lradc
  24       - items:
  25           - const: allwinner,sun20i-d1-lradc
  26           - const: allwinner,sun50i-r329-lradc
  27
  28   reg:
  29     maxItems: 1
  30
  31   clocks:
  32     maxItems: 1
  33
  34   resets:
  35     maxItems: 1
  36
  37   interrupts:
  38     maxItems: 1
  39
  40   vref-supply:
  41     description:
  42       Regulator for the LRADC reference voltage
  43
  44   wakeup-source: true
  45
  46 patternProperties:
  47   "^button-[0-9]+$":
  48     type: object
  49     $ref: input.yaml#
  50     properties:
  51       label:
  52         $ref: /schemas/types.yaml#/definitions/string
  53         description: Descriptive name of the key
  54
  55       linux,code: true
  56
  57       channel:
  58         $ref: /schemas/types.yaml#/definitions/uint32
  59         enum: [0, 1]
  60         description: ADC Channel this key is attached to
  61
  62       voltage:
  63         $ref: /schemas/types.yaml#/definitions/uint32
  64         description:
  65           Voltage in microvolts at LRADC input when this key is
  66           pressed
  67
  68     required:
  69       - label
  70       - linux,code
  71       - channel
  72       - voltage
  73
  74     additionalProperties: false
  75
  76 required:
  77   - compatible
  78   - reg
  79   - interrupts
  80   - vref-supply
  81
  82 if:
  83   properties:
  84     compatible:
  85       contains:
  86         enum:
  87           - allwinner,sun50i-r329-lradc
  88
  89 then:
  90   required:
  91     - clocks
  92     - resets
  93
  94 additionalProperties: false
  95
  96 examples:
  97   - |
  98     lradc: lradc@1c22800 {
  99         compatible = "allwinner,sun4i-a10-lradc-keys";
 100         reg = <0x01c22800 0x100>;
 101         interrupts = <31>;
 102         vref-supply = <&reg_vcc3v0>;
 103
 104         button-191 {
 105             label = "Volume Up";
 106             linux,code = <115>;
 107             channel = <0>;
 108             voltage = <191274>;
 109         };
 110
 111         button-392 {
 112             label = "Volume Down";
 113             linux,code = <114>;
 114             channel = <0>;
 115             voltage = <392644>;
 116         };
 117     };
 118
 119 ...