linux-kernel - Re: [PATCH v2 1/6] dt-bindings: i2c: qcom,i2c-cci: Fall back to common compatibles

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Date:   Tue, 13 Dec 2022 20:16:44 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org
Cc:     marijn.suijten@...ainline.org,
        Loic Poulain <loic.poulain@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/6] dt-bindings: i2c: qcom,i2c-cci: Fall back to
 common compatibles

On 13/12/2022 19:33, Konrad Dybcio wrote:
> Almost every compatible string in the CCI driver is a duplicate. Adjust
> the bindings to include a common (first-soc-implementing-vX) compatible
> to remove the need to keep adding superfluous compatible strings.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
> Changes in v2:
> - make sure the actual patch contests are tested..
> - resolve errors
> 
>  .../devicetree/bindings/i2c/qcom,i2c-cci.yaml | 47 ++++++++++++-------
>  1 file changed, 30 insertions(+), 17 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml
> index cf9f8fda595f..87e414f0c39c 100644
> --- a/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml
> +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml
> @@ -12,14 +12,23 @@ maintainers:
>  
>  properties:
>    compatible:
> -    enum:
> -      - qcom,msm8226-cci
> -      - qcom,msm8916-cci
> -      - qcom,msm8974-cci
> -      - qcom,msm8996-cci
> -      - qcom,sdm845-cci
> -      - qcom,sm8250-cci
> -      - qcom,sm8450-cci
> +    oneOf:
> +      - enum:
> +          - qcom,msm8226-cci
> +          - qcom,msm8974-cci
> +          - qcom,msm8996-cci
> +
> +      - items:
> +          - enum:
> +              - qcom,msm8916-cci
> +          - const: qcom,msm8226-cci # CCI v1
> +
> +      - items:
> +          - enum:
> +              - qcom,sdm845-cci
> +              - qcom,sm8250-cci
> +              - qcom,sm8450-cci
> +          - const: qcom,msm8996-cci # CCI v2
>  
>    "#address-cells":
>      const: 1
> @@ -88,10 +97,12 @@ allOf:
>    - if:
>        properties:
>          compatible:
> -          contains:
> -            enum:
> -              - qcom,msm8226-cci
> -              - qcom,msm8974-cci
> +          oneOf:
> +            - contains:
> +                enum:
> +                  - qcom,msm8974-cci
> +
> +            - const: qcom,msm8226-cci

The old version is here also correct and simpler. I don't think you need
to change it this way.

>      then:
>        properties:
>          clocks:
> @@ -105,10 +116,12 @@ allOf:
>    - if:
>        properties:
>          compatible:
> -          contains:
> -            enum:
> -              - qcom,msm8916-cci
> -              - qcom,msm8996-cci
> +          oneOf:
> +            - contains:
> +                enum:
> +                  - qcom,msm8916-cci
> +
> +            - const: qcom,msm8996-cci

The same comment.

>      then:
>        properties:
>          clocks:
> @@ -169,7 +182,7 @@ examples:
>  
>      cci@...a000 {
>          reg = <0x0ac4a000 0x4000>;
> -        compatible = "qcom,sdm845-cci";
> +        compatible = "qcom,sdm845-cci", "qcom,msm8996-cci";
>          #address-cells = <1>;
>          #size-cells = <0>;
>  

Best regards,
Krzysztof