Re: [PATCH v7 1/3] dt-bindings: media: stm32-dcmi: Add DCMI min frequency property

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On Wed, Jul 01, 2020 at 03:01:27PM +0200, Benjamin Gaignard wrote:
> Document st,stm32-dcmi-min-frequency property which is used to
> request CPUs minimum frequency when streaming frames.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxx>
> ---
>  Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> index 3fe778cb5cc3..05ca85a2411a 100644
> --- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> @@ -44,6 +44,13 @@ properties:
>        bindings defined in
>        Documentation/devicetree/bindings/media/video-interfaces.txt.
>  
> +  st,stm32-dcmi-min-frequency:
> +    description: DCMI minimum CPUs frequency requirement (in KHz).
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - default: 0

I think this is questionable to be in DT and if it is, it's something 
that's hardly specific to ST or this block. IIRC, we already have a way 
to specify minimum OPPs.

Rob



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