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arm64: tegra: Enable GPCDMA in Tegra264 and add iommu-map

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Enable GPCDMA in Tegra264 and add the iommu-map property so that each
channel uses a separate stream ID and gets its own IOMMU domain for
memory.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Akhil R 2026-03-31 15:53:03 +05:30 committed by Thierry Reding
parent 0cbacf9ca3
commit 7de0c114f0
2 changed files with 5 additions and 0 deletions
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4
arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
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@ -9,6 +9,10 @@ aliases {
};
bus@0 {
dma-controller@8400000 {
status = "okay";
};
serial@c4e0000 {
status = "okay";
};

1
arch/arm64/boot/dts/nvidia/tegra264.dtsi
View File

@ -3244,6 +3244,7 @@ gpcdma: dma-controller@8400000 {
<GIC_SPI 615 IRQ_TYPE_LEVEL_HIGH>;
#dma-cells = <1>;
iommus = <&smmu1 0x00000800>;
iommu-map = <1 &smmu1 0x801 31>;
dma-coherent;
dma-channel-mask = <0xfffffffe>;
status = "disabled";