[PATCH v4 0/4] PCI: tegra: Add Tegra264 support

Thierry Reding
2026-04-02T14:27:55Z

Hi,

this series adds support for the PCIe controllers found on the Tegra264
SoC. There are six instances, one of which is for internal purposes only
and the other five are general purpose.

The first two patches in the series add the BPMP support needed to power
up/down the PCI link. Patch 3 contains the device tree bindings for the
PCIe controller. Before adding the driver in patch 5, patch 4 introduces
some new common wait times for PCIe and unifies the way that drivers use
them. Finally, patch 6 adds DT nodes for the controllers found on the
Tegra264 SoC.

Note that this cannot be applied for v7.1-rc1 because there's a build
dependency that's going through the Tegra tree. If you'd like to merge
this, please let me know and I can provide a branch with the
dependencies resolved.

Changes in v4:
- strip out dependencies that are going in through the ARM SoC tree
- revert bindings to oneOf construct so that we don't produce new DTC
warnings
- Link to v3: https://patch.msgid.link/20260326135855.2795149-1-thierry.reding@kernel.org

Changes in v3:
- integrate PCI standard wait times patch into the series to maintain
bisectability
- fix review comments from Mikko
- Link to v2: https://patch.msgid.link/20260320225443.2571920-1-thierry.reding@kernel.org

Changes in v2:
- fix an issue with sanity-checking disabled BARs
- address review comments
- Link to v1: https://patch.msgid.link/20260319160110.2131954-1-thierry.reding@kernel.org

Thanks,
Thierry

---
Thierry Reding (4):
dt-bindings: pci: Document the NVIDIA Tegra264 PCIe controller
PCI: Use standard wait times for PCIe link monitoring
PCI: tegra: Add Tegra264 support
arm64: tegra: Add PCI controllers on Tegra264

.../bindings/pci/nvidia,tegra264-pcie.yaml | 174 +++++++
arch/arm64/boot/dts/nvidia/tegra264.dtsi | 248 ++++++++--
drivers/pci/controller/Kconfig | 10 +-
drivers/pci/controller/Makefile | 1 +
.../controller/cadence/pcie-cadence-host-common.c | 6 +-
.../pci/controller/cadence/pcie-cadence-lga-regs.h | 5 -
drivers/pci/controller/mobiveil/pcie-mobiveil.c | 4 +-
drivers/pci/controller/mobiveil/pcie-mobiveil.h | 5 -
drivers/pci/controller/pci-aardvark.c | 7 +-
drivers/pci/controller/pcie-tegra264.c | 527 +++++++++++++++++++++
drivers/pci/controller/pcie-xilinx-nwl.c | 9 +-
drivers/pci/controller/plda/pcie-starfive.c | 9 +-
drivers/pci/pci.h | 2 +
13 files changed, 946 insertions(+), 61 deletions(-)
---
base-commit: bfbb8533d7293235b71e4096cc0bc9a5c0c20b20
change-id: 20260402-tegra264-pcie-e30abe23da07

Best regards,
--
Thierry Reding <treding@nvidia.com>