linux-kernel - [PATCH 1/2] dt-bindings: ufs: qcom: allow 'dma-coherent' property

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Date:   Mon,  5 Dec 2022 11:08:36 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.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,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 1/2] dt-bindings: ufs: qcom: allow 'dma-coherent' property

UFS controllers may be cache coherent and must be marked as such in the
devicetree to avoid data corruption.

This is specifically needed on recent Qualcomm platforms like SC8280XP.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 Documentation/devicetree/bindings/ufs/qcom,ufs.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
index f2d6298d926c..1f1d286749c0 100644
--- a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
+++ b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
@@ -44,6 +44,8 @@ properties:
     minItems: 8
     maxItems: 11
 
+  dma-coherent: true
+
   interconnects:
     minItems: 2
     maxItems: 2
-- 
2.37.4