dt-bindings: dma: nvidia,tegra186-gpc-dma: Add iommu-map property

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Add iommu-map property to specify separate stream IDs for each DMA
channel. This enables each channel to be in its own IOMMU domain,
keeping memory isolated from other devices sharing the same DMA
controller.

Define the constraints such that if the channel and stream IDs are
contiguous, a single entry can map all the channels, but if the
channels or stream IDs are non-contiguous support multiple entries.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260331102303.33181-4-akhilrajeev@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Akhil R 2026-03-31 15:52:56 +05:30 • committed by Vinod Koul

parent cc6049bd3f

commit d6d7ffb994

1 changed files with 9 additions and 0 deletions

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Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml

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