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.

Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---

James and Martin,

I'm resending as reminder in case you missed the first submission which
included an arm64 dts update and also did not have you on CC as I was
following scripts/get_maintainer.pl too literally:

	https://lore.kernel.org/all/20221205100837.29212-1-johan+linaro@kernel.org/

I've added Rob and Bjorn's Reviewed-by tags from the above thread.

Could you take this one through the scsi tree?

Johan


 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
-- 
2.38.2

On Mon, 16 Jan 2023 17:42:36 +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.
> 
> 

Applied to 6.3/scsi-queue, thanks!

[1/1] dt-bindings: ufs: qcom: allow 'dma-coherent' property
      https://git.kernel.org/mkp/scsi/c/85e182b48a33

-- 
Martin K. Petersen	Oracle Linux Engineering

Johan,

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

Applied to 6.3/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering