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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
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# SPDX-License-Identifier: GPL-2.0

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/input/allwinner,sun4i-a10-lradc-keys.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Allwinner A10 LRADC

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maintainers:

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  - Chen-Yu Tsai <wens@csie.org>

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  - Maxime Ripard <mripard@kernel.org>

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properties:

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  compatible:

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    oneOf:

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      - const: allwinner,sun4i-a10-lradc-keys

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      - const: allwinner,sun8i-a83t-r-lradc

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      - items:

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          - enum:

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              - allwinner,suniv-f1c100s-lradc

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              - allwinner,sun50i-a64-lradc

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          - const: allwinner,sun8i-a83t-r-lradc

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      - const: allwinner,sun50i-r329-lradc

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      - items:

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          - enum:

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              - allwinner,sun50i-h616-lradc

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              - allwinner,sun20i-d1-lradc

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          - const: allwinner,sun50i-r329-lradc

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  reg:

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    maxItems: 1

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  clocks:

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    maxItems: 1

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  resets:

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    maxItems: 1

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  interrupts:

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    maxItems: 1

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  vref-supply:

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    description:

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      Regulator for the LRADC reference voltage

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  wakeup-source: true

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patternProperties:

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  "^button-[0-9]+$":

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    type: object

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    $ref: input.yaml#

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    properties:

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      label:

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        description: Descriptive name of the key

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      linux,code: true

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      channel:

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        $ref: /schemas/types.yaml#/definitions/uint32

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        enum: [0, 1]

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        description: ADC Channel this key is attached to

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      voltage:

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        $ref: /schemas/types.yaml#/definitions/uint32

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        description:

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          Voltage in microvolts at LRADC input when this key is

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          pressed

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    required:

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      - label

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      - linux,code

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      - channel

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      - voltage

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    additionalProperties: false

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required:

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  - compatible

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  - reg

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  - interrupts

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  - vref-supply

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if:

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  properties:

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    compatible:

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      contains:

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        enum:

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          - allwinner,sun50i-r329-lradc

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then:

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  required:

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    - clocks

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    - resets

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additionalProperties: false

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examples:

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  - |

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    lradc: lradc@1c22800 {

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        compatible = "allwinner,sun4i-a10-lradc-keys";

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        reg = <0x01c22800 0x100>;

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        interrupts = <31>;

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        vref-supply = <&reg_vcc3v0>;

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        button-191 {

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            label = "Volume Up";

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            linux,code = <115>;

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            channel = <0>;

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            voltage = <191274>;

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        };

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        button-392 {

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            label = "Volume Down";

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            linux,code = <114>;

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            channel = <0>;

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            voltage = <392644>;

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        };

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    };

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...

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