linux-kernel - Re: [Freedreno] [PATCH 6/7] arm64: dts: qcom: sc7280: Mark Adreno SMMU as DMA coherent

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Message-ID: <3aseuir2pvvfewb6ot7lxwpzcjfqvboofz5pmkfiveprfybyin@atmuqgmowrq2>
Date:   Tue, 17 Oct 2023 01:53:19 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
CC:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        <cros-qcom-dts-watchers@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Rob Clark <robdclark@...omium.org>,
        <devicetree@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        Luca Weiss <luca.weiss@...rphone.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        <freedreno@...ts.freedesktop.org>
Subject: Re: [Freedreno] [PATCH 6/7] arm64: dts: qcom: sc7280: Mark Adreno
 SMMU as DMA coherent

On Tue, Sep 26, 2023 at 08:24:41PM +0200, Konrad Dybcio wrote:
> 
> The SMMUs on sc7280 are cache-coherent. APPS_SMMU is marked as such,
> mark the GPU one as well.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Reviewed-by: Akhil P Oommen <quic_akhilpo@...cinc.com>

-Akhil

> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 0d96d1454c49..edaca6c2cf8c 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2783,6 +2783,7 @@ adreno_smmu: iommu@...0000 {
>  					"gpu_cc_hub_aon_clk";
>  
>  			power-domains = <&gpucc GPU_CC_CX_GDSC>;
> +			dma-coherent;
>  		};
>  
>  		remoteproc_mpss: remoteproc@...0000 {
> 
> -- 
> 2.42.0
>