diff options
| author | Ajay Kumar Nandam <ajay.nandam@oss.qualcomm.com> | 2026-09-23 22:03:40 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-10-06 17:37:52 +0200 |
| commit | 7ff0bdaf929229b0bc1f3786fa7590ace4b62796 (patch) | |
| tree | 2a26ad9fe8ab8abcc90fcce955fb46d07ae3e5a9 /Documentation/devicetree/bindings/sound | |
| parent | d3ad9ee48425f06b2ae512a9d76c8ba855decdb9 (diff) | |
ASoC: dt-bindings: qcom,q6apm-dai: add memory-region and relax iommus
On modem-DSP (mDSP) platforms the DSP runs in a stage-2 protected
context and cannot use the SMMU. PCM buffers must live in reserved-memory
carveouts that are SCM-assigned to the appropriate VMIDs.
Add a memory-region property (1-2 entries) for the control-path and
data-path carveouts, and require q6apm-dais nodes to describe exactly
one access path: iommus for SMMU-backed systems or memory-region for
mDSP systems. Remove iommus from the common required list since mDSP
platforms have neither IOMMU nor VMID DT properties.
Signed-off-by: Ajay Kumar Nandam <ajay.nandam@oss.qualcomm.com>
Link: https://patch.msgid.link/20260923-vmid-v4-v6-3-3d61a0319b1c@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml b/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml index 9e5b30d9c6e6..c1f9fc9eab64 100644 --- a/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml +++ b/Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml @@ -20,9 +20,24 @@ properties: minItems: 1 maxItems: 2 + memory-region: + minItems: 1 + items: + - description: + Control-path buffer (audio_heap_mem) for platforms where the DSP + runs in a stage-2 protected context (e.g. modem-DSP). + - description: + Data-path buffer pool from which per-stream DMA buffers are + allocated. + required: - compatible - - iommus + +oneOf: + - required: + - iommus + - required: + - memory-region additionalProperties: false |