Re: [PATCH v4 1/4] dt-bindings: iio: adc: add AD4691 family

[David Lechner]

On 3/20/26 6:03 AM, Radu Sabau via B4 Relay wrote:
> From: Radu Sabau <radu.sabau@xxxxxxxxxx>
> 
> Add DT bindings for the Analog Devices AD4691 family of multichannel
> SAR ADCs (AD4691, AD4692, AD4693, AD4694).
> 

...

> +allOf:
> +  # ref-supply and refin-supply are mutually exclusive, one is required
> +  - oneOf:
> +      - required:
> +          - ref-supply
> +      - required:
> +          - refin-supply
> +
> +  # CNV Burst Mode (pwms present) without SPI offload requires a DRDY interrupt.
> +  # Offload configurations expose '#trigger-source-cells' instead.

This sounds like a current driver limitation, not a wiring limitation.
So doesn't belong in the devicetree.

A driver could use e.g. timer wait for the conversion instead of an interrupt.

> +  - if:
> +      required:
> +        - pwms
> +      not:
> +        required:
> +          - '#trigger-source-cells'
> +    then:
> +      required:
> +        - interrupts
> +