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

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Message-ID: <20250221013758.370936-1-inochiama@gmail.com>
Date: Fri, 21 Feb 2025 09:37:54 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Niklas Cassel <cassel@...nel.org>,
	Shashank Babu Chinta Venkata <quic_schintav@...cinc.com>
Cc: linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org,
	sophgo@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Yixun Lan <dlan@...too.org>,
	Longbin Li <looong.bin@...il.com>
Subject: [PATCH 0/2] riscv: sophgo Add PCIe support to Sophgo SG2044 SoC

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

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2.48.1