linux-kernel - Re: [PATCH 4/6] arm64: dts: qcom: sm8250: add missing qcom,smmu-500 fallback

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Message-ID: <f2ecffe7-9a43-4a77-7721-14c59f2931e6@linaro.org>
Date:   Mon, 17 Apr 2023 09:30:22 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] arm64: dts: qcom: sm8250: add missing qcom,smmu-500
 fallback



On 16.04.2023 14:37, Krzysztof Kozlowski wrote:
> Since commit 6c84bbd103d8 ("dt-bindings: arm-smmu: Add generic
> qcom,smmu-500 bindings") the SMMU is supposed to use qcom,smmu-500
> compatible fallback:
> 
>   ['qcom,sm8250-smmu-500', 'qcom,adreno-smmu', 'qcom,smmu-500', 'arm,mmu-500'] is too long
>   'qcom,sm8250-smmu-500' is not one of ['qcom,msm8996-smmu-v2', 'qcom,msm8998-smmu-v2', 'qcom,sdm630-smmu-v2']
>   'qcom,sm8250-smmu-500' is not one of ['qcom,msm8996-smmu-v2', 'qcom,sc7180-smmu-v2', 'qcom,sdm630-smmu-v2', 'qcom,sdm845-smmu-v2'
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index 7bea916900e2..778fbec9a554 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -5254,7 +5254,7 @@ wake-pins {
>  		};
>  
>  		apps_smmu: iommu@...00000 {
> -			compatible = "qcom,sm8250-smmu-500", "arm,mmu-500";
> +			compatible = "qcom,sm8250-smmu-500", "qcom,smmu-500", "arm,mmu-500";
>  			reg = <0 0x15000000 0 0x100000>;
>  			#iommu-cells = <2>;
>  			#global-interrupts = <2>;