diff options
| author | Vikash Garodia <vikash.garodia@oss.qualcomm.com> | 2026-07-22 19:11:19 +0530 |
|---|---|---|
| committer | Bryan O'Donoghue <bod@kernel.org> | 2026-09-29 12:05:40 +0100 |
| commit | fe12ccf5a98fe11f43f2db9dcb45147a11104301 (patch) | |
| tree | 28af6e3bbe6d3a1315f56210273b5f4151bd6e31 | |
| parent | fecab9ef2b91edbdcfb0e6a1dc50fe3e246f28be (diff) | |
dt-bindings: media: qcom,qcm2290-venus: document shikra venus compatible
Document the venus video accelerator used on shikra platforms by adding
the qcom,shikra-venus 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.
Reviewed-by: Vishnu Reddy <busanna.reddy@oss.qualcomm.com>
Signed-off-by: Vikash Garodia <vikash.garodia@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml index 5977e7d0a71b..b27899ebf164 100644 --- a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml +++ b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml @@ -13,14 +13,13 @@ description: The Venus AR50_LITE IP is a video encode and decode accelerator present on Qualcomm platforms. -allOf: - - $ref: qcom,venus-common.yaml# - properties: compatible: oneOf: - items: - - const: qcom,sm6115-venus + - enum: + - qcom,shikra-venus + - qcom,sm6115-venus - const: qcom,qcm2290-venus - const: qcom,qcm2290-venus @@ -45,9 +44,6 @@ properties: - const: vcodec0_core - const: vcodec0_bus - iommus: - maxItems: 2 - interconnects: maxItems: 2 @@ -65,6 +61,22 @@ required: - power-domain-names - iommus +allOf: + - $ref: qcom,venus-common.yaml# + - if: + properties: + compatible: + contains: + const: qcom,shikra-venus + then: + properties: + iommus: + maxItems: 1 + else: + properties: + iommus: + maxItems: 2 + unevaluatedProperties: false examples: |