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 20:20:05 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...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 20:16, Krzysztof Kozlowski wrote:
> 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.
e.g. the 845 example contains 8996 but does not fall in this category,
reverting this change causes errors.

Konrad
> 
>>      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
>