Re: [PATCH 1/3] dt-bindings: media: i2c: max9286: Add support for per-port supplies

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On Fri, Dec 17, 2021 at 12:09:44AM +0200, Laurent Pinchart wrote:
> From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> 
> Power supplies for the ports can be controlled per port depending on the
> hardware design. Support per-port supplies in the DT bindings, mutually
> exclusive with the global supply.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
>  .../bindings/media/i2c/maxim,max9286.yaml     | 25 ++++++++++++++++++-
>  1 file changed, 24 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> index 02f656e78700..33aa307e8ee5 100644
> --- a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> @@ -39,7 +39,7 @@ properties:
>      maxItems: 1
>  
>    poc-supply:
> -    description: Regulator providing Power over Coax to the cameras
> +    description: Regulator providing Power over Coax to all the ports
>  
>    enable-gpios:
>      description: GPIO connected to the \#PWDN pin with inverted polarity
> @@ -160,6 +160,10 @@ properties:
>  
>              additionalProperties: false
>  
> +patternProperties:
> +  "^port[0-3]-poc-supply$":
> +    description: Regulator providing Power over Coax for a particular port
> +
>  required:
>    - compatible
>    - reg
> @@ -167,6 +171,25 @@ required:
>    - i2c-mux
>    - gpio-controller
>  
> +allOf:
> +  - if:
> +      required:
> +        - poc-supply
> +    then:
> +      allOf:
> +        - not:
> +            required:
> +              - port0-poc-supply
> +        - not:
> +            required:
> +              - port1-poc-supply
> +        - not:
> +            required:
> +              - port2-poc-supply
> +        - not:
> +            required:
> +              - port3-poc-supply

I think you can invert the if and move patternProperties to the 'then' 
and...

> +
>  additionalProperties: false

then use unevaluatedProperties here.

Rob



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