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Message-ID: <61f2c58a-9ca8-3868-e3e0-31283e8b1728@linaro.org>
Date: Mon, 5 Dec 2022 12:37:06 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Johan Hovold <johan+linaro@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Alim Akhtar <alim.akhtar@...sung.com>,
Avri Altman <avri.altman@....com>
Cc: Andy Gross <agross@...nel.org>,
Bart Van Assche <bvanassche@....org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sc8280xp: fix UFS DMA coherency
On 05/12/2022 11:08, Johan Hovold wrote:
> The SC8280XP UFS controllers are cache coherent and must be marked as
> such in the devicetree to avoid potential data corruption.
>
> Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform")
> Cc: stable@...r.kernel.org # 6.0
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Konrad
> arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index c4947c563099..23d1f51527aa 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -1430,6 +1430,7 @@ ufs_mem_hc: ufs@...4000 {
> required-opps = <&rpmhpd_opp_nom>;
>
> iommus = <&apps_smmu 0xe0 0x0>;
> + dma-coherent;
>
> clocks = <&gcc GCC_UFS_PHY_AXI_CLK>,
> <&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
> @@ -1491,6 +1492,7 @@ ufs_card_hc: ufs@...4000 {
> power-domains = <&gcc UFS_CARD_GDSC>;
>
> iommus = <&apps_smmu 0x4a0 0x0>;
> + dma-coherent;
>
> clocks = <&gcc GCC_UFS_CARD_AXI_CLK>,
> <&gcc GCC_AGGRE_UFS_CARD_AXI_CLK>,
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