Re: [PATCH v2 2/5] dt-bindings: media: qcom,sc7280-venus: Add dma-coherent property

["Rob Herring (Arm)" <robh@kernel.org>]

On Tue, 18 Aug 2026 21:24:15 +0530, Vishnu Reddy wrote:
> The venus video hardware on SC7280 is IO-coherent hardware: even though
> the driver does dma_sync*() calls for the input and output buffers, the
> venus node still needs to declare dma-coherent so that the DMA mapping
> layer relies on this hardware level snooping to keep the CPU cache and
> the DMA buffers in sync. This avoids the unnecessary cache clean or
> invalidate operations performed by the dma_sync*() calls, which are not
> required once hardware level snooping is enabled via dma-coherent.
> 
> Add the dma-coherent property to the venus node to describe this
> hardware capability.
> 
> Fixes: 37613aee2179 ("arm64: dts: qcom: sc7280: Add venus DT node")
> Cc: stable@vger.kernel.org
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> Signed-off-by: Vishnu Reddy <busanna.reddy@oss.qualcomm.com>
> ---
>  Documentation/devicetree/bindings/media/qcom,sc7280-venus.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml: Unresolvable reference: /schemas/input/qcom,spmi-haptics.yaml#

doc reference errors (make refcheckdocs):
Documentation/translations/pt_BR/process/security-bugs.rst: :doc:`regular path submission </../../../process/submitting-patches>`
Documentation/translations/zh_CN/how-to.rst: Documentation/translations/zh_CN/xxx.rst
arch/arm/xen/enlighten.c: Documentation/devicetree/bindings/arm/xen.txt

See https://patchwork.kernel.org/project/devicetree/patch/20260818-iris-fixes-dma-pseq-fint-v2-2-8dc8c4b3880e@oss.qualcomm.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.