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[v8,0/5] PCI: rcar-gen4: Add R-Car V4H support

Message ID 20240520074300.125969-1-yoshihiro.shimoda.uh@renesas.com
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Series PCI: rcar-gen4: Add R-Car V4H support | expand

Message

Yoshihiro Shimoda May 20, 2024, 7:42 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.

About the firmware binary, please refer to the following patch
descirption:
  PCI: rcar-gen4: Add support for r8a779g0

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 v7:
https://lore.kernel.org/linux-pci/20240415081135.3814373-1-yoshihiro.shimoda.uh@renesas.com/
- Since the following patches are merged into pci.git / dt-bindings branch,
  drop them from this patch series:
   dt-bindings: PCI: rcar-gen4-pci-host: Add R-Car V4H compatible
   dt-bindings: PCI: rcar-gen4-pci-ep: Add R-Car V4H compatible
- Add Reviewed-by in the patch [25]/5.
- Add a condition to avoid automated tools report in the patch 2/5.
- Change the new function which adds an "enable" flag in the patch 3/5.
  So, change the commit description and move some functions' places.
- Revise the commit description and add firmware information in detail in
  the patch 4/5.
- Use the offset directly instead of definitions in the patch 4/5.
- Add comments for some magical offsets/values in the patch 4/5.
- Change error message when request_firmware() failed in the patch 4/5.

Changes from v6:
https://lore.kernel.org/linux-pci/20240410004832.3726922-1-yoshihiro.shimoda.uh@renesas.com/
- Add Manivannan's Reviewed-by in patch [37]/7.
- Rename a struct from "platdata" to "drvdata" in patch [4/7].
- Revise the commit descriptions in patch [456]/7.
- Rename some functions in patch 6/7.
- Fix the return value of an error path in patch 6/7.

Changes from v5:
https://lore.kernel.org/linux-pci/20240408012458.3717977-1-yoshihiro.shimoda.uh@renesas.com/
- Drop "dwc: " prefixes from the subjects in patch [0456]/7.

Changes from v4:
https://lore.kernel.org/linux-pci/20240403053304.3695096-1-yoshihiro.shimoda.uh@renesas.com/
- Fix compatible string for renesas,r8a779f0-pcie-ep which was described
  accidentally from v3...

Yoshihiro Shimoda (5):
  PCI: dwc: Add PCIE_PORT_{FORCE,LANE_SKEW} macros
  PCI: rcar-gen4: Add rcar_gen4_pcie_drvdata
  PCI: rcar-gen4: Add .ltssm_control() for other SoC support
  PCI: rcar-gen4: Add support for r8a779g0
  misc: pci_endpoint_test: Document a policy about adding pci_device_id

 drivers/misc/pci_endpoint_test.c             |   1 +
 drivers/pci/controller/dwc/pcie-designware.h |   6 +
 drivers/pci/controller/dwc/pcie-rcar-gen4.c  | 300 ++++++++++++++++---
 3 files changed, 273 insertions(+), 34 deletions(-)