[PATCH v1 1/3] dt-bindings: sound: qcom,q6apm-dai: add optional qcom,vmid

[Ajay Kumar Nandam]

Add an optional qcom,vmid property for q6apm-dais nodes to describe
additional VMIDs that should be granted access to PCM DMA buffers.

The property is optional and bounded, and driver-side validation will
reject invalid values such as including HLOS in the list or VMIDs that
exceed 31, matching current SCM source-permission mask handling.

Signed-off-by: Ajay Kumar Nandam <ajay.nandam@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/sound/qcom,q6apm-dai.yaml      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml b/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml
index 9e5b30d9c6e6..b767625985a7 100644
--- a/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml
@@ -20,6 +20,16 @@ properties:
     minItems: 1
     maxItems: 2
 
+  qcom,vmid:
+    description: Optional list of destination VMIDs to share PCM DMA buffers with.
+      HLOS retains RW access as source owner and must not be listed.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      minimum: 1
+      maximum: 31
+    minItems: 1
+    maxItems: 8
+
 required:
   - compatible
   - iommus
-- 
2.34.1