On Tue, 14 May 2024 15:02:18 +0300
Alisa-Dariana Roman <alisadariana@gmail.com> wrote:
> AINCOM should actually be a supply. AINx inputs are referenced to AINCOM
> in pseudo-differential operation mode. AINCOM voltage represents the
> offset of corresponding channels.
>
> Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
> Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
Whilst I'm not sure we've totally bottomed out on how to describe
all combinations of pseudo-differential this seem reasonable for this
particular device and harmless against any proposals we have had so far.
Hence applied.
Jonathan
> ---
> Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> index 16def2985ab4..cf5c568f140a 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> @@ -41,6 +41,11 @@ properties:
> interrupts:
> maxItems: 1
>
> + aincom-supply:
> + description: |
> + AINCOM voltage supply. Analog inputs AINx are referenced to this input
> + when configured for pseudo-differential operation.
> +
> dvdd-supply:
> description: DVdd voltage supply
>
> @@ -117,6 +122,7 @@ examples:
> clock-names = "mclk";
> interrupts = <25 0x2>;
> interrupt-parent = <&gpio>;
> + aincom-supply = <&aincom>;
> dvdd-supply = <&dvdd>;
> avdd-supply = <&avdd>;
> vref-supply = <&vref>;