Kernel-4.18.0-80.el8_nvidia,tegra30-smmu

NVIDIA Tegra 30 IOMMU H/W, SMMU (System Memory Management Unit)

Required properties:

• compatible : “nvidia,tegra30-smmu”
• reg : Should contain 3 register banks(address and length) for each
  of the SMMU register blocks.
• interrupts : Should contain MC General interrupt.
• nvidia,#asids : # of ASIDs
• dma-window : IOVA start address and length.
• nvidia,ahb : phandle to the ahb bus connected to SMMU.

Example:
smmu {
compatible = “nvidia,tegra30-smmu”;
reg = <0x7000f010 0x02c
0x7000f1f0 0x010
0x7000f228 0x05c>;
nvidia,#asids = <4>; /* # of ASIDs /
dma-window = <0 0x40000000>; / IOVA start & length */
nvidia,ahb = <&ahb>;
};