Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Base kernel is the same as v5. Changes from v5: https://lore.kernel.org/all/20220905071257.1059436-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - No treewide patches. - Drop PCI_EXP_LNKCAP_MLW_X32 in patch [03/10]. - Add Acked-by in patch [03/10]. - Fix subject prefix in patch [04/10], [05/10], [08/10] and [09/10]. - Fix typo in patch [05/10] and [07/10]. Changes from v4: https://lore.kernel.org/all/20220722110744.2274466-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Rebased on next-20220901. -- And based on the following patches: [PATCH v5 00/20] PCI: dwc: Add generic resources and Baikal-T1 support https://lore.kernel.org/linux-pci/20220822184701.25246-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ [PATCH RESEND v5 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support https://lore.kernel.org/dmaengine/20220822185332.26149-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ - Notes that snps,dw-pcie-common.yaml modification seems under construction so that dt-bindings of R-Car Gen4 is based on next-20220901. Yoshihiro Shimoda (10): dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: designware-ep: Expose dw_pcie_ep_exit() to module PCI: designware-ep: Add ep_pre_init() callback to dw_pcie_ep_ops PCI: dwc: Add reset_all_bars flag PCI: dwc: Avoid reading a register to detect whether eDMA exists PCI: rcar-gen4: Add R-Car Gen4 PCIe Host support PCI: rcar-gen4-ep: Add R-Car Gen4 PCIe Endpoint support MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4 .../bindings/pci/rcar-gen4-pci-ep.yaml | 99 +++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 97 +++++++++ MAINTAINERS | 1 + drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 14 ++ drivers/pci/controller/dwc/pcie-designware.c | 4 +- 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 | 181 ++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 63 ++++++ include/uapi/linux/pci_regs.h | 6 + 13 files changed, 864 insertions(+), 2 deletions(-) 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
