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>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 687d354439ea..d0b426b9aeaf 100644
--- 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";
         };