[PATCH v1 1/3] dt-bindings: sound: qcom,q6apm-dai: add optional qcom,vmid
From: Ajay Kumar Nandam <hidden>
Date: 2026-06-09 06:41:00
Also in:
linux-arm-msm, linux-sound, lkml
Subsystem:
arm/qualcomm mailing list, open firmware and flattened device tree bindings, qcom audio (asoc) drivers, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Srinivas Kandagatla, Liam Girdwood, Mark Brown, Linus Torvalds
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 <redacted> --- .../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
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2.34.1