[v7,00/10] PCI: imx6: Fix\rename\clean up and add lut information for imx95

Message

Frank Li July 8, 2024, 5:08 p.m. UTC

Fixed 8mp EP mode problem.

imx6 actaully for all imx chips (imx6*, imx7*, imx8*, imx9*). To avoid
confuse, rename all imx6_* to imx_*, IMX6_* to IMX_*. pci-imx6.c to
pci-imx.c to avoid confuse.

Using callback to reduce switch case for core reset and refclk.

Add iMX8QXP and iMX8QM support. PHY driver ref:
https://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git/commit/?h=next&id=82c56b6dd24fcdf811f2b47b72e5585c8a79b685

Base on linux 6.10-rc1

To: Richard Zhu <[e-mail]>
To: Lucas Stach <[e-mail]>
To: Lorenzo Pieralisi <[e-mail]>
To: Krzysztof Wilczyński <[e-mail]>
To: Rob Herring <[e-mail]>
To: Bjorn Helgaas <[e-mail]>
To: Shawn Guo <[e-mail]>
To: Sascha Hauer <[e-mail]>
To: Pengutronix Kernel Team <[e-mail]>
To: Fabio Estevam <[e-mail]>
To: NXP Linux Team <[e-mail]>
To: Philipp Zabel <[e-mail]>
To: Liam Girdwood <[e-mail]>
To: Mark Brown <[e-mail]>
To: Manivannan Sadhasivam <[e-mail]>
To: Krzysztof Kozlowski <[e-mail]>
To: Conor Dooley <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Frank Li <[e-mail]>

Changes in v7:
- rework commit message for PCI: imx6: Fix i.MX8MP PCIe EP's occasional failure to trigger MSI 
- Add Mani's review tags for patch 1, 5
- Fix errata number in commit message for patch 6
- replace set_ref_clk with enable_ref_clk in patch 4
- using regmap_set(clear)_bits in patch 4
- Use exactly the same logic with original code at patch 4
- Add errata doc link for patch 6
- Fix miss "." at comment form patch 6.
- order include header for patch 9
- use cap register to set_speed for patch 9
- use PCIe in error msg for patch 9
- Remove reduntant ':' at patch 9' subject.
- Change range to ranges for patch 10.
- Change error code to -ENODEV for patch 10.
- Link to v6: https://lore.kernel.org/r/[e-mail]

Changes in v6:
- Base on Linux 6.10-rc1 by Bjorn's required.
- Remove imx95 LUT patch because it need more time to work out the
solution. This patch add 8qxp and 8qm and support and some bug fixes.
- Link to v5: https://lore.kernel.org/r/[e-mail]

Changes in v5:
- Rebase to linux-pci next. fix conflict with gpiod change
- Add rob and cornor's review tag
- Link to v4: https://lore.kernel.org/r/[e-mail]

Changes in v4:
- Improve comment message for patch 1 and 2.
- Rework commit message for patch 3 and add mani's review tag
- Remove file rename patch and update maintainer patch
- [PATCH v3 06/11] PCI: imx: Simplify switch-case logic by involve set_ref_clk callback
	remove extra space.
	keep original comments format (wrap at 80 column width)
	update error message "'Failed to enable PCIe REFCLK'"
- PATCH v3 07/11] PCI: imx: Simplify switch-case logic by involve core_reset callback
	keep exact the logic as original code
- Add patch to update comment about workaround ERR010728
- Add patch about help function imx_pcie_match_device()
- Using bus device notify to update LUT information for imx95 to avoid
parse iommu-map and msi-map in driver code.  Bus notify will better and
only update lut when device added.
- split patch call PHY interface function.
- Improve commit message for imx8q. remove local-address dts proptery. and
use standard "range" to convert cpu address to bus address.
- Check entry in cpu_fix function is too late. Check it at probe
- Link to v3: https://lore.kernel.org/r/[e-mail]

Changes in v3:
- Add an EP fixed patch
  PCI: imx6: Fix PCIe link down when i.MX8MM and i.MX8MP PCIe is EP mode
  PCI: imx6: Fix i.MX8MP PCIe EP can not trigger MSI
- Add 8qxp rc support
dt-bing yaml pass binding check
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j8  dt_binding_check DT_SCHEMA_FILES=fsl,imx6q-pcie.yaml
  LINT    Documentation/devicetree/bindings
  DTEX    Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.example.dts
  CHKDT   Documentation/devicetree/bindings/processed-schema.json
  SCHEMA  Documentation/devicetree/bindings/processed-schema.json
  DTC_CHK Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.example.dtb

- Link to v2: https://lore.kernel.org/r/[e-mail]

Changes in v2:
- remove file to 'pcie-imx.c'
- keep CONFIG unchange.
- Link to v1: https://lore.kernel.org/r/[e-mail]

---
Frank Li (6):
      PCI: imx6: Rename imx6_* with imx_*
      PCI: imx6: Introduce SoC specific callbacks for controlling REFCLK
      PCI: imx6: Simplify switch-case logic by involve core_reset callback
      PCI: imx6: Improve comment for workaround ERR010728
      PCI: imx6: Consolidate redundant if-checks
      PCI: imx6: Call common PHY API to set mode, speed, and submode

Richard Zhu (4):
      PCI: imx6: Fix establish link failure in EP mode for iMX8MM and iMX8MP
      PCI: imx6: Fix i.MX8MP PCIe EP's occasional failure to trigger MSI
      dt-bindings: imx6q-pcie: Add i.MX8Q pcie compatible string
      PCI: imx6: Add i.MX8Q PCIe root complex (RC) support

 .../devicetree/bindings/pci/fsl,imx6q-pcie.yaml    |   16 +
 drivers/pci/controller/dwc/pci-imx6.c              | 1005 +++++++++++---------
 2 files changed, 553 insertions(+), 468 deletions(-)
---
base-commit: 48f0407456e4e68319a5cfcf409ceb57902acc54
change-id: 20240227-pci2_upstream-0cdd19a15163

Best regards,
---
Frank Li <[e-mail]>