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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#

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

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title: Microchip mcp4725 and mcp4726 DAC

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maintainers:

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  - Tomas Novotny <tomas@novotny.cz>

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properties:

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  compatible:

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    enum:

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      - microchip,mcp4725

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      - microchip,mcp4726

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  reg:

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    maxItems: 1

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  vdd-supply:

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    description: |

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      Provides both power and acts as the reference supply on the mcp4725.

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      For the mcp4726 it will be used as the reference voltage if vref-supply

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      is not provided.

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  vref-supply:

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    description:

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      Vref pin is used as a voltage reference when this supply is specified.

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  microchip,vref-buffered:

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    type: boolean

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    description: |

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      Enable buffering of the external Vref pin. This boolean is not valid

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      without the vref-supply. Quoting the datasheet: This is offered in

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      cases where the reference voltage does not have the current

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      capability not to drop its voltage when connected to the internal

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      resistor ladder circuit.

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allOf:

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  - if:

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      properties:

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        compatible:

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          contains:

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            const: microchip,mcp4725

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    then:

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      properties:

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        vref-supply: false

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      required:

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        - vdd-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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            const: microchip,mcp4726

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    then:

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      anyOf:

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        - required:

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            - vdd-supply

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        - required:

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            - vref-supply

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  - if:

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      not:

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        required:

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          - vref-supply

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    then:

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      properties:

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        microchip,vref-buffered: false

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required:

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  - compatible

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  - reg

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additionalProperties: false

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examples:

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  - |

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    i2c {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        mcp4725@60 {

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            compatible = "microchip,mcp4725";

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            reg = <0x60>;

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            vdd-supply = <&vdac_vdd>;

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        };

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    };

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...

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