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Use iommu-map to specify separate stream\nID for each channel. This enables each channel to be in its own iommu\ndomain and keeps the memory isolated from other devices sharing the\nsame DMA controller.\n\nSigned-off-by: Akhil R \n---\n .../devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml | 8 ++++++++\n 1 file changed, 8 insertions(+)","diff":"diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml\nindex 0dabe9bbb219..542e9cb9f641 100644\n--- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml\n+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml\n@@ -14,6 +14,7 @@ description: |\n maintainers:\n - Jon Hunter \n - Rajesh Gumasta \n+ - Akhil R \n \n allOf:\n - $ref: dma-controller.yaml#\n@@ -51,6 +52,13 @@ properties:\n iommus:\n maxItems: 1\n \n+ iommu-map:\n+ description: |\n+ The mapping of DMA controller channels to IOMMU stream IDs. Each entry in the map specifies the\n+ relationship between a DMA channel and its corresponding IOMMU stream ID. The format is:\n+ \"\". Example: \"<1 &smmu 0x801 1>\"\n+ $ref: /schemas/types.yaml#/definitions/phandle-array\n+\n dma-coherent: true\n \n dma-channel-mask:\n","prefixes":["1/8"]}