[PATCH 0/2] riscv: sophgo Add PCIe support to Sophgo SG2044 SoC

Inochi Amaoto
2025-02-21T01:38:16Z

Sophgo's SG2044 SoC uses Synopsys Designware PCIe core
to implement RC mode.

For legacy interrupt, the PCIe controller on SG2044 implement
its own legacy interrupt controller. For MSI/MSI-X, it use an
external interrupt controller to handle.

The external MSI interrupt controller patch can be found on [1].
As SG2044 needs a mirror change to support the way to send MSI
message and different irq number.

[1] https://lore.kernel.org/all/cover.1736921549.git.unicorn_wang@outlook.com/

Inochi Amaoto (2):
dt-bindings: pci: Add Sophgo SG2044 PCIe host
PCI: sophgo-dwc: Add Sophgo SG2044 PCIe driver

.../bindings/pci/sophgo,sg2044-pcie.yaml | 125 ++++++++
drivers/pci/controller/dwc/Kconfig | 10 +
drivers/pci/controller/dwc/Makefile | 1 +
drivers/pci/controller/dwc/pcie-dw-sophgo.c | 282 ++++++++++++++++++
4 files changed, 418 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/sophgo,sg2044-pcie.yaml
create mode 100644 drivers/pci/controller/dwc/pcie-dw-sophgo.c

--
2.48.1