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

[Vikash Garodia]

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@xxxxxxxxxxxxxxxx>
---
 .../bindings/media/qcom,qcm2290-venus.yaml           | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
index 5977e7d0a71b4fb5681f1c2094439c251366f01f..895533b9756690d075fd7729e3f805c8e72ff0df 100644
--- a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
+++ b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
@@ -15,12 +15,27 @@ description:
 
 allOf:
   - $ref: qcom,venus-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,shikra-iris
+    then:
+      properties:
+        iommus:
+          maxItems: 1
+    else:
+      properties:
+        iommus:
+          maxItems: 2
 
 properties:
   compatible:
     oneOf:
       - items:
-          - const: qcom,sm6115-venus
+          - enum:
+              - qcom,sm6115-venus
+              - qcom,shikra-iris
           - const: qcom,qcm2290-venus
       - const: qcom,qcm2290-venus
 
@@ -45,9 +60,6 @@ properties:
       - const: vcodec0_core
       - const: vcodec0_bus
 
-  iommus:
-    maxItems: 2
-
   interconnects:
     maxItems: 2
 

-- 
2.34.1