On Mon, Dec 05, 2022 at 05:29:06PM +0530, Manivannan Sadhasivam wrote: > On Mon, Dec 05, 2022 at 11:08:36AM +0100, Johan Hovold wrote: > > 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@xxxxxxxxxx> > > --- > > 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 > > + > > This property is not applicable to all SoCs. So setting true here will make it > valid for all. Yes, it would be a valid, but it will only be added to the DTs of SoCs that actually require it. No need to re-encode the dtsi in the binding. Johan
