[PATCH 2/2] arm64: tegra: Add ISO SMMU controller for Tegra194

[Jon Hunter]

The display controllers are attached to a separate ARM SMMU instance
that is dedicated to servicing isochronous memory clients. Add this ISO
instance of the ARM SMMU to device tree.

Please note that the display controllers are not hooked up to this SMMU
yet, because we are still missing a means to transition framebuffers
used by the bootloader to the kernel.

This based upon an initial patch by Thierry Reding <treding at nvidia.com>.

Signed-off-by: Jon Hunter <jonathanh at nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 76 ++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index d78c9ed08c47..496e31b5c637 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1474,6 +1474,82 @@ pmc: pmc at c360000 {
 			interrupt-controller;
 		};
 
+		iommu at 10000000 {
+			compatible = "nvidia,tegra194-smmu", "nvidia,smmu-500";
+			reg = <0x10000000 0x800000>;
+			interrupts = <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>;
+			stream-match-mask = <0x7f80>;
+			#global-interrupts = <1>;
+			#iommu-cells = <1>;
+
+			nvidia,memory-controller = <&mc>;
+			status = "okay";
+		};
+
 		smmu: iommu at 12000000 {
 			compatible = "nvidia,tegra194-smmu", "nvidia,smmu-500";
 			reg = <0x12000000 0x800000>,
-- 
2.25.1