Re: [PATCH v3 1/3] dt-bindings: media: qcom,qcm2290-venus: document shikra Iris compatible

[Krzysztof Kozlowski <krzk@kernel.org>]

On Thu, Jun 18, 2026 at 04:09:54PM +0530, Vikash Garodia wrote:
> Document the iris video accelerator used on shikra platforms by adding
> the qcom,shikra-iris compatible.
> 
> Although QCM2290 and shikra share the same video hardware and overall
> integration, their SMMU programming differs. QCM2290 exposes separate
> stream IDs for the video hardware and the Xtensa path, requiring two
> explicit IOMMU entries, whereas shikra uses a masked SMR to collapse
> equivalent stream IDs into a single mapping. Due to QCM2290’s SID layout
> and Xtensa isolation requirements, such SMR masking is not applicable on
> QCM2290 platforms.
> Since shikra uses the same video hardware as QCM2290 and shares the same
> programming model and capabilities, it is added as a fallback compatible
> to qcom,qcm2290-venus, with conditional handling to allow either one or
> two IOMMU entries.
> 
> Signed-off-by: Vikash Garodia <vikash.garodia@oss.qualcomm.com>
> ---
>  .../bindings/media/qcom,qcm2290-venus.yaml         | 26 ++++++++++++++++------
>  1 file changed, 19 insertions(+), 7 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof