[PATCH v8 0/6] PCI: rcar-gen4: Add R-Car Gen4 PCIe support

Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.

Changes from v7:
https://lore.kernel.org/all/20221121124400.1282768-1-yoshihiro.shimoda.uh@renesas.com/ (local)
 - Based on next-20230131.
 - Update Copyright year of new files.
 - Add a new capability flag (DW_PCIE_CAP_EDMA_UNROLL) for finding eDMA on
   R-Car S4-8.
 - Remove some PCIe configurations like L1 substates from pcie-rcar-gen4-host.c.
 - Change timing of reset_control for suitable this hardware initialization.
 - Add gpio reset handling for host mode.
 - Capitalize the first charactors on each printk message.

Changes from v6:
 https://lore.kernel.org/all/20220922080647.3489791-1-yoshihiro.shimoda.uh@renesas.com/ (local)
 - Based on next-20221116.
 -- And based on the following patches:
    [PATCH v7 00/20] PCI: dwc: Add generic resources and Baikal-T1 support
    https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ (local)
    [PATCH v6 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support
    https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/ (local)
 - Update dt-bindings docs for the latest based code.
 - Add support for triggering legacy IRQs in the patch [06/10] (new).
 - Add .no_msix flag into the patch [07/10].
 - Merge .ep_pre_init() support into the patch [08/10].
 - Add .reserved_bar for BAR5 instead in the patch [08/10].
 - Change SPDX-License-Identifier from "GPL-2.0" to "GPL-2.0-only".

Yoshihiro Shimoda (6):
  PCI: Add PCI_EXP_LNKCAP_MLW macros
  PCI: designware-ep: Expose dw_pcie_ep_exit() to module
  PCI: dwc: Add support for triggering legacy IRQs
  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

 MAINTAINERS                                   |   1 +
 drivers/pci/controller/dwc/Kconfig            |  18 ++
 drivers/pci/controller/dwc/Makefile           |   4 +
 .../pci/controller/dwc/pcie-designware-ep.c   |  70 ++++++-
 .../pci/controller/dwc/pcie-designware-host.c |   3 +
 drivers/pci/controller/dwc/pcie-designware.c  |  33 +++-
 drivers/pci/controller/dwc/pcie-designware.h  |  19 +-
 .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 185 ++++++++++++++++++
 .../pci/controller/dwc/pcie-rcar-gen4-host.c  | 165 ++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 166 ++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.h   |  63 ++++++
 include/uapi/linux/pci_regs.h                 |   6 +
 12 files changed, 714 insertions(+), 19 deletions(-)
 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