arm64: tegra: Add ISO SMMU controller for Tegra194

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@nvidia.com>.

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

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index c97febf90ead7512f8054cc8da1f6443a4628063..f9b1900088ad8412e5ed299d0ab72aec045e597f 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1508,6 +1508,82 @@
 
                };
 
+               iommu@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@12000000 {
                        compatible = "nvidia,tegra194-smmu", "nvidia,smmu-500";
                        reg = <0x12000000 0x800000>,