arm64: tegra: Add IOMMU node to GM20B on Tegra210

The operating system driver can take advantage of the IOMMU to remove
the need for physically contiguous memory buffers.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 687d354439ea1f9cde0045f5f30b87b4119b5596..d0b426b9aeaff987724ab25aa8f6af88f9160704 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -231,6 +231,9 @@
                clock-names = "gpu", "pwr", "ref";
                resets = <&tegra_car 184>;
                reset-names = "gpu";
+
+               iommus = <&mc TEGRA_SWGROUP_GPU>;
+
                status = "disabled";
        };