Re: [PATCH 05/11] dt-bindings: spi: dw: Add Pensando Elba SoC SPI Controller bindings

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On 07/04/2022 01:36, Brad Larson wrote:
> The Pensando Elba SoC has integrated the DW APB SPI Controller
> and requires the property pensando,syscon-spics for access
> to the spics control register.
> 
> Signed-off-by: Brad Larson <brad@xxxxxxxxxxx>
> ---
> Change from V3:
> - Add required property pensando,syscon-spics to go with
>   pensando,elba-spi

Thank you for your patch. There is something to discuss/improve.


>  .../bindings/spi/snps,dw-apb-ssi.yaml           | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
> index d7e08b03e204..41c3bbf5a55c 100644
> --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
> +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
> @@ -37,6 +37,21 @@ allOf:
>      else:
>        required:
>          - interrupts
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - pensando,elba-spi
> +    then:
> +      properties:
> +        pensando,syscon-spics:
> +          $ref: /schemas/types.yaml#/definitions/phandle
> +          description:
> +            Phandle to the system control device node which provides access to
> +            the spics control register

It looks you only need to poke one register from spics, so it could be
something like:

    items:
      - items:
          - description: Phandle to the system control device node
          - description: spics control register offset


Best regards,
Krzysztof



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