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dt: amd-seattle: add a description of the PCIe SMMU

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Add a description of the SMMU that covers the PCIe host bridge
on AMD Seattle.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Ard Biesheuvel 2019-12-03 15:23:03 +00:00 committed by Arnd Bergmann
parent acd9208ef8
commit dd5c160655
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1 changed files with 10 additions and 0 deletions
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arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi
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@ -239,6 +239,16 @@
<0x02000000 0x00 0x40000000 0x00 0x40000000 0x00 0x80000000>,
/* 64-bit MMIO (size= 508G) */
<0x03000000 0x01 0x00000000 0x01 0x00000000 0x7f 0x00000000>;
iommu-map = <0x0 &pcie_smmu 0x0 0x10000>;
};
pcie_smmu: iommu@e0a00000 {
compatible = "arm,mmu-401";
reg = <0 0xe0a00000 0 0x10000>;
#global-interrupts = <1>;
interrupts = <0 333 4>, <0 333 4>;
#iommu-cells = <1>;
dma-coherent;
};
/* Perf CCN504 PMU */