linux-kernel - Re: [PATCH v2 4/8] dt-bindings: arm-smmu: Add compatible for SM4450 SoC

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Date:   Fri, 15 Sep 2023 11:10:57 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tengfei Fan <quic_tengfan@...cinc.com>, will@...nel.org,
        robin.murphy@....com, joro@...tes.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        catalin.marinas@....com
Cc:     geert+renesas@...der.be, arnd@...db.de, neil.armstrong@...aro.org,
        nfraprado@...labora.com, rafal@...ecki.pl, peng.fan@....com,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, quic_tsoni@...cinc.com,
        quic_shashim@...cinc.com, quic_kaushalk@...cinc.com,
        quic_tdas@...cinc.com, quic_tingweiz@...cinc.com,
        quic_aiquny@...cinc.com, kernel@...cinc.com
Subject: Re: [PATCH v2 4/8] dt-bindings: arm-smmu: Add compatible for SM4450
 SoC

On 15/09/2023 09:15, Tengfei Fan wrote:
> 
> 
> 在 9/15/2023 3:11 PM, Krzysztof Kozlowski 写道:
>> On 15/09/2023 04:15, Tengfei Fan wrote:
>>> Add the SoC specific compatible for SM4450 implementing arm,mmu-500.
>>>
>>> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
>>> ---
>>>   Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 3 +++
>>>   1 file changed, 3 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
>>> index cf29ab10501c..b57751c8ad90 100644
>>> --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
>>> +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
>>> @@ -47,6 +47,7 @@ properties:
>>>                 - qcom,sdx55-smmu-500
>>>                 - qcom,sdx65-smmu-500
>>>                 - qcom,sdx75-smmu-500
>>> +              - qcom,sm4450-smmu-500
>>>                 - qcom,sm6115-smmu-500
>>>                 - qcom,sm6125-smmu-500
>>>                 - qcom,sm6350-smmu-500
>>> @@ -70,6 +71,7 @@ properties:
>>>                 - qcom,sc8180x-smmu-500
>>>                 - qcom,sc8280xp-smmu-500
>>>                 - qcom,sdm845-smmu-500
>>> +              - qcom,sm4450-smmu-500
>>
>> Isn't there comment just few lines above your edit? Comment saying DON'T?
> yes, I saw this "DON'T" comment, but if I remove "qcom,sm4450-smmu-500" 
> from sm4450.dtsi and this arm,smmu.yaml, will get DT check warning about 

Why would you remove it?

> this, this warning cannot be find after add "qcom,sm4450-smmu-500" from 
> sm4450.dtsi and this arm,smmu.yaml, so update this patch again.

What does the comment say? Why are you adding it to the enum which asks
- do not add to this enum, but add to other above and below?


Best regards,
Krzysztof