Re: [PATCH RFC 1/3] dt-bindings: iio: adc: Add reference-source property

[David Lechner]

On 6/18/26 7:33 PM, Kurt Borja wrote:
> Some ADCs have configurable voltage reference sources for each channel.
> 
> Signed-off-by: Kurt Borja <kuurtb@xxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/iio/adc/adc.yaml | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> index b9bc02b5b07a4c..c74c2084fdb68c 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> @@ -73,6 +73,16 @@ properties:
>        device design and can interact with other characteristics such as
>        settling time.
>  
> +  reference-source:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    maxItems: 2
> +    minItems: 1
> +    description:
> +      Indicates the voltage reference source or sources for this channel.
> +
> +      This array describes either a single reference source or a positive and
> +      negative reference sources.

Do you actually know of any devices that allow independently selecting
the positive and negative sources? I don't think I've ever seen anything
like that.

Also, this should be string, not uint32.

> +
>  anyOf:
>    - oneOf:
>        - required:
>