Before enabling Address Translation Support (ATS) in endpoints, the OS needs to confirm that the Root Complex supports it. Obtain this information from the firmware description since there is no architected method. ACPI provides a bit via IORT tables, so add the devicetree equivalent. Since v1 [1] I added the review and ack tags, thanks all. This should be ready to go via the IOMMU tree. [1] https://lore.kernel.org/all/20240429113938.192706-2-jean-philippe@xxxxxxxxxx/ Jean-Philippe Brucker (3): dt-bindings: PCI: generic: Add ats-supported property iommu/of: Support ats-supported device-tree property arm64: dts: fvp: Enable PCIe ATS for Base RevC FVP .../devicetree/bindings/pci/host-generic-pci.yaml | 6 ++++++ drivers/iommu/of_iommu.c | 9 +++++++++ arch/arm64/boot/dts/arm/fvp-base-revc.dts | 1 + 3 files changed, 16 insertions(+) -- 2.45.2
