arm64: tegra: Use correct compatible string for Tegra186 SMMU

The SMMU found on Tegra186 requires interoperation with the memory
controller in order to program stream ID overrides. The generic ARM SMMU
500 compatible is therefore inaccurate. Replace it with a more correct,
SoC-specific compatible string.

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

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 9f75bbf..a173f40 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -1082,7 +1082,7 @@
        };
 
        smmu: iommu@12000000 {
-               compatible = "arm,mmu-500";
+               compatible = "nvidia,tegra186-smmu", "nvidia,smmu-500";
                reg = <0 0x12000000 0 0x800000>;
                interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
                             <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,