Declare that the host controller supports ATS, so the OS can enable it for ATS-capable PCIe endpoints.
Signed-off-by: Jean-Philippe Brucker <[email protected]> --- All endpoints support ATS provided they have the ats_supported=1 model parameter. "lspci -vv" shows whether ATS is supported and enabled. --- arch/arm64/boot/dts/arm/fvp-base-revc.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts index 62ab0d54ff71..6e5bb7bcb4b3 100644 --- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts +++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts @@ -170,6 +170,7 @@ pci: pci@40000000 { iommu-map = <0x0 &smmu 0x0 0x10000>; dma-coherent; + ats-supported; }; smmu: smmu@2b400000 { -- 2.25.0 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
