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

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Message-ID: <20250304071239.352486-1-inochiama@gmail.com>
Date: Tue,  4 Mar 2025 15:12:36 +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>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Johan Hovold <johan+linaro@...nel.org>,
	Shashank Babu Chinta Venkata <quic_schintav@...cinc.com>,
	Niklas Cassel <cassel@...nel.org>
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/20250303111648.1337543-1-inochiama@gmail.com

Changed from v1:
- https://lore.kernel.org/all/20250221013758.370936-1-inochiama@gmail.comq
1. patch 1: remove dma-coherent property
2. patch 2: remove unused reset
3. patch 2: fix Kconfig menu title and reorder the entry
4. patch 2: use FIELD_GET/FIELD_PREP to simplify the code.
5. patch 2: rename the irq handle function to match the irq_chip name

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      | 122 ++++++++
 drivers/pci/controller/dwc/Kconfig            |  10 +
 drivers/pci/controller/dwc/Makefile           |   1 +
 drivers/pci/controller/dwc/pcie-dw-sophgo.c   | 270 ++++++++++++++++++
 4 files changed, 403 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