On Fri, Jul 17, 2026 at 03:28:25PM +0530, Pratyush Meduri wrote: > The audio ML (machine-learning) offload use case requires a contiguous, > physically addressable buffer shared with the audio DSP/SPF, and issues > DMA transactions through additional SMMU stream IDs that are not > covered by the existing ADSP mapping. > > Add a dedicated reusable shared-dma-pool CMA region (16 MiB, 4 MiB > aligned) and wire it to the q6apm DAIs node via memory-region. A > dedicated pool guarantees the alignment and contiguity the DSP expects > and isolates these allocations from the default CMA region. > > Under the EL2 (Gunyah/hypervisor) configuration the SMMU is fully > enforcing, so the ML transactions are otherwise blocked and faulted: > > arm-smmu 15000000.iommu: Blocked unknown Stream ID 0x2060 > arm-smmu 15000000.iommu: Blocked unknown Stream ID 0x2062 > > Add the ML-related stream IDs (0x3060 mask 0x9, 0x3062 mask 0x1) to the > remoteproc_adsp iommus property in the EL2 overlay so these buffers are > translated by the SMMU instead of being rejected. > > Signed-off-by: Pratyush Meduri <[email protected]> > --- > arch/arm64/boot/dts/qcom/monaco-el2.dtso | 4 +++- > arch/arm64/boot/dts/qcom/monaco.dtsi | 9 +++++++++ > 2 files changed, 12 insertions(+), 1 deletion(-) >
NAK, you keep ignoring us. Best regards, Krzysztof
