Le 05/03/2026 à 07:20, Sumit Kumar a écrit :

This series adds support for multi-port PCIe controllers in the DesignWare
driver. Currently, the driver only supports a single Root Port with
controller-level properties, which doesn't work for multi-port controllers
where each port may have different configurations.

This series introduces a per-port structure and parsing API that allows
each Root Port to be configured independently via pcie@N child nodes in
device tree, while maintaining backward compatibility with existing
single-port bindings.

Signed-off-by: Sumit Kumar <redacted>
---
Changes in v2:
- Fix error code preservation in dw_pcie_resume_noirq() to return actual
   error from dw_pcie_wait_for_link() instead of hardcoded -ETIMEDOUT (Mani).
- Initialize ret variable to -ENOENT in dw_pcie_parse_root_ports() (Mani).
- dw_pcie_host_init(): Remove -ENOENT error skipping to make parsing
   failures fatal for now, add TODO comment about making properties
   optional later (Mani).
- Link to v1: https://lore.kernel.org/r/20260105-dt-parser-v1-0-b11c63cb5e2c@oss.qualcomm.com (local)

---
Sumit Kumar (2):
       PCI: API changes for multi-port controller support
       PCI: dwc: Add multi-port controller support

  drivers/pci/controller/dwc/pci-exynos.c           |   4 +-
  drivers/pci/controller/dwc/pci-imx6.c             |  15 +-
  drivers/pci/controller/dwc/pci-meson.c            |   1 -
  drivers/pci/controller/dwc/pcie-designware-host.c | 175 ++++++++++++++++++----
  drivers/pci/controller/dwc/pcie-designware.c      |  32 ++--
  drivers/pci/controller/dwc/pcie-designware.h      |  17 ++-
  drivers/pci/controller/dwc/pcie-fu740.c           |   6 +-
  drivers/pci/controller/dwc/pcie-intel-gw.c        |  13 +-
  drivers/pci/controller/dwc/pcie-qcom-common.c     |   5 +-
  drivers/pci/controller/dwc/pcie-qcom-ep.c         |   4 +-
  drivers/pci/controller/dwc/pcie-qcom.c            |   4 +-
  drivers/pci/controller/dwc/pcie-rcar-gen4.c       |  13 +-
  drivers/pci/controller/dwc/pcie-spear13xx.c       |   5 +-
  drivers/pci/controller/dwc/pcie-tegra194.c        |   4 +-
  drivers/pci/of.c                                  |   6 +-
  drivers/pci/pci.h                                 |   2 +
  16 files changed, 232 insertions(+), 74 deletions(-)
---
base-commit: 097a6c336d0080725c626fda118ecfec448acd0f
change-id: 20251010-dt-parser-98b50ce18fc1

Best regards,

Tested on meson-pci (boot log https://gitlab.com/amlogic-foss/abcd-linux-test/-/jobs/13677061036)

Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # On Bananapi M2S

Thanks,
Neil