Declare that the host controller supports ATS, so the OS can enable it
for ATS-capable PCIe endpoints.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
---
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
