linux-kernel - [PATCH v4 0/6] PCI: rzg3s-host: Add PCIe driver for Renesas RZ/G3S SoC

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Message-ID: <20250912122444.3870284-1-claudiu.beznea.uj@bp.renesas.com>
Date: Fri, 12 Sep 2025 15:24:38 +0300
From: Claudiu <claudiu.beznea@...on.dev>
To: bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	kwilczynski@...nel.org,
	mani@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	geert+renesas@...der.be,
	magnus.damm@...il.com,
	p.zabel@...gutronix.de
Cc: claudiu.beznea@...on.dev,
	linux-pci@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v4 0/6] PCI: rzg3s-host: Add PCIe driver for Renesas RZ/G3S SoC

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Hi,

Series adds a PCIe driver for the Renesas RZ/G3S SoC.
It is split as follows:
- patches 1-2/6:	add PCIe support for the RZ/G3S SoC
- patches 3-6/6:	add device tree support and defconfig flag

Please provide your feedback.

Merge strategy, if any:
- patches 1-2/6 can go through the PCI tree
- patches 3-6/6 can go through the Renesas tree

Thank you,
Claudiu Beznea

Changes in v4:
- dropped v3 patches:
  - "clk: renesas: r9a08g045: Add clocks and resets support for PCIe"
  - "soc: renesas: rz-sysc: Add syscon/regmap support"
  as they are already integrated
- dropped v3 patch "PCI: of_property: Restore the arguments of the
  next level parent" as it is not needed anymore in this version due
  port being added in device tree
- addressed review comments
- per-patch changes are described in each individual patch

Changes in v3:
- added patch "PCI: of_property: Restore the arguments of the next level parent"
  to fix the legacy interrupt request
- addressed review comments
- per-patch changes are described in each individual patch

Changes in v2:
- dropped "of/irq: Export of_irq_count()" as it is not needed anymore
  in this version
- added "arm64: dts: renesas: rzg3s-smarc-som: Update dma-ranges for PCIe"
  to reflect the board specific memory constraints
- addressed review comments
- updated patch "soc: renesas: rz-sysc: Add syscon/regmap support"
- per-patch changes are described in each individual patch


Claudiu Beznea (6):
  dt-bindings: PCI: renesas,r9a08g045s33-pcie: Add documentation for the
    PCIe IP on Renesas RZ/G3S
  PCI: rzg3s-host: Add Renesas RZ/G3S SoC host driver
  arm64: dts: renesas: r9a08g045: Add PCIe node
  arm64: dts: renesas: rzg3s-smarc-som: Update dma-ranges for PCIe
  arm64: dts: renesas: rzg3s-smarc: Enable PCIe
  arm64: defconfig: Enable PCIe for the Renesas RZ/G3S SoC

 .../bindings/pci/renesas,r9a08g045-pcie.yaml  |  240 +++
 MAINTAINERS                                   |    8 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    |   66 +
 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     |   10 +
 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi  |   11 +
 arch/arm64/configs/defconfig                  |    1 +
 drivers/pci/controller/Kconfig                |    8 +
 drivers/pci/controller/Makefile               |    1 +
 drivers/pci/controller/pcie-rzg3s-host.c      | 1792 +++++++++++++++++
 9 files changed, 2137 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/renesas,r9a08g045-pcie.yaml
 create mode 100644 drivers/pci/controller/pcie-rzg3s-host.c

-- 
2.43.0