Re: [PATCH 1/2] dt-bindings: media: qcom,sm8550-iris: Allow IOVA reservation memory-region

[Rob Herring (Arm)]

On Mon, 01 Jun 2026 12:13:33 +0800, Daniel J Blueman wrote:
> In addition to the firmware-loaded codec carveout, some Iris platforms
> need to declare an IOMMU IOVA reservation (a reserved-memory node with
> iommu-addresses) to keep DMA away from IOVA ranges that earlier
> firmware stages have already mapped through the SMMU.
> 
> Permit a second memory-region phandle for this purpose, and describe
> the meaning of each entry so the ordering is unambiguous.
> 
> Signed-off-by: Daniel J Blueman <daniel@xxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

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/media/qcom,sm8550-iris.yaml: properties:memory-region: {'minItems': 1, 'maxItems': 2, 'items': [{'description': 'Firmware-loaded codec carveout'}, {'description': 'IOMMU IOVA reservation region'}]} should not be valid under {'required': ['maxItems']}
	hint: "maxItems" is not needed with an "items" list
	from schema $id: http://devicetree.org/meta-schemas/items.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260601041336.9497-1-daniel@xxxxxxxxx

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.