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 <tred...@nvidia.com>.
Signed-off-by: Jon Hunter <jonath...@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@c360000 {
interrupt-controller;
};
+ 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>,
--
2.25.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
