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[v4,0/7] PCI: dwc: rcar-gen4: Add R-Car V4H support

Message ID 20240403053304.3695096-1-yoshihiro.shimoda.uh@renesas.com (mailing list archive)
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Series PCI: dwc: rcar-gen4: Add R-Car V4H support | expand

Message

Yoshihiro Shimoda April 3, 2024, 5:32 a.m. UTC 
The pcie-rcar-gen4 driver can reuse other R-Car Gen4 support like
r8a779g0 (R-Car V4H) and r8a779h0 (R-Car V4M). However, some
initializing settings differ between R-Car S4-8 (r8a779f0) and
others. The R-Car S4-8 will be minority about the setting way. So,
R-Car V4H will be majority and this is generic initialization way
as "renesas,rcar-gen4-pcie{-ep}" compatible. For now, I tested
both R-Car S4-8 and R-Car V4H on this driver. I'll support one more
other SoC (R-Car V4M) in the future.

Changes from v3:
https://lore.kernel.org/linux-pci/20240401023942.134704-1-yoshihiro.shimoda.uh@renesas.com/
- Modify the code to use "do .. while" instead of goto in patch 6/7.

Changes from v2:
https://lore.kernel.org/linux-pci/20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com/
- Add a new patch which just add a platdata in patch 4/7.
- Modify the subjects in patch [56]/7.
- Modify the description and code about Bjorn's comment in patch [56]/7.
- Add missing MODULE_FIRMWARE(9 in patch 6/7.
- Document a policy aboud adding pci_device_id instead of adding r8a779g0's id
  in patch 7/7.

Changes from v1:
https://lore.kernel.org/linux-pci/20240229120719.2553638-1-yoshihiro.shimoda.uh@renesas.com/
- Based on v6.9-rc1.
- Add Acked-by and/or Reviewed-by in patch [126/6].

Yoshihiro Shimoda (7):
  dt-bindings: PCI: rcar-gen4-pci-host: Add R-Car V4H compatible
  dt-bindings: PCI: rcar-gen4-pci-ep: Add R-Car V4H compatible
  PCI: dwc: Add PCIE_PORT_{FORCE,LANE_SKEW} macros
  PCI: dwc: rcar-gen4: Add rcar_gen4_pcie_platdata
  PCI: dwc: rcar-gen4: Add .ltssm_enable() for other SoC support
  PCI: dwc: rcar-gen4: Add support for r8a779g0
  misc: pci_endpoint_test: Document a policy about adding pci_device_id

 .../bindings/pci/rcar-gen4-pci-ep.yaml        |   4 +-
 .../bindings/pci/rcar-gen4-pci-host.yaml      |   4 +-
 drivers/misc/pci_endpoint_test.c              |   1 +
 drivers/pci/controller/dwc/pcie-designware.h  |   6 +
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 272 +++++++++++++++++-
 5 files changed, 270 insertions(+), 17 deletions(-)