Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v2: - Remove some unneeded functions in patch [09/13]. - Fix error messages in patch [09/13]. - Rebase implementation of patch [10/13] on patch [09/13]. https://lore.kernel.org/all/20220627122417.809615-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ Changes from v1: - Fix a lot of warning/errors by 'make DT_CHECKER_FLAGS=-m dt_binding_check'. - Add PCI_EXP_LNKCAP_MLW macros into pci_regs.h - Remove "extern" in pcie-rcar-gen4.h. - Add ep_pre_init() into dw_pcie_ep_ops for this controller. - Add a new flag "reset_all_bars" into dw_pcie_ep. If this way is acceptable, I'll make patches for other endpoint controllers to simplify. - Move timing of getting num-lanes property for {ep_pre,host}_init(). - Remove some platform_get_resource(). - Remove "struct rcar_gen4_pcie_ep". - Allow a kernel module for both host and ep of this controller. - Minor fixes for checkpatch.pl. https://lore.kernel.org/all/20220613115712.2831386-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ Yoshihiro Shimoda (13): PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: controller: dwc: Expose dw_pcie_ep_exit() to module PCI: dwc: Add ep_pre_init() callback to dw_pcie_ep_ops PCI: dwc: Add reset_all_bars flag PCI: dwc: endpoint: Read num-lanes property before ep_pre_init() PCI: dwc: host: Read num-lanes property before host_init() dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint PCI: renesas: Add R-Car Gen4 PCIe Host support PCI: renesas: Add R-Car Gen4 PCIe Endpoint support MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4 arm64: dts: renesas: r8a779f0: Add PCIe Host and Endpoint nodes arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0 .../bindings/pci/rcar-gen4-pci-ep.yaml | 99 +++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 97 +++++++++ MAINTAINERS | 1 + .../boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 39 ++++ arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 118 +++++++++++ drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 16 ++ .../pci/controller/dwc/pcie-designware-host.c | 2 + drivers/pci/controller/dwc/pcie-designware.c | 1 - drivers/pci/controller/dwc/pcie-designware.h | 2 + .../pci/controller/dwc/pcie-rcar-gen4-ep.c | 182 ++++++++++++++++ .../pci/controller/dwc/pcie-rcar-gen4-host.c | 195 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 178 ++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 61 ++++++ include/uapi/linux/pci_regs.h | 7 + 16 files changed, 1019 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-host.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.h -- 2.25.1
