[PATCH 6/6] arm64: tegra: Enable and mark the Tegra264 GPU PCIe controller as ATS supported
From: Mikko Perttunen
Date: Wed Oct 28 2026 - 23:35:50 EST
PCIe C0 connects to the integrated GPU and is internal to the SoC.
Therefore enable it directly in the SoC device tree file.
At the same time, mark it as ats-supported -- the GPU issues ATS
requests and this is required to enable their handling.
Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
---
arch/arm64/boot/dts/nvidia/tegra264.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra264.dtsi b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
index 4c8b320ecc40..9f39b5c52a01 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
@@ -3580,6 +3580,7 @@ pci@c000000 {
iommu-map = <0x0 &smmu2 0x10000 0x10000>;
msi-map = <0x0 &its 0x210000 0x10000>;
dma-coherent;
+ ats-supported;
ranges = <0x81000000 0x00 0x84000000 0xd0 0x84000000 0x00 0x00200000>, /* I/O */
<0x82000000 0x00 0x20000000 0x00 0x20000000 0x00 0x08000000>, /* non-prefetchable memory (128 MiB) */
@@ -3587,7 +3588,6 @@ pci@c000000 {
bus-range = <0x0 0xff>;
nvidia,bpmp = <&bpmp 0>;
- status = "disabled";
pcie@0 {
device_type = "pci";
--
2.55.0