Re: [PATCH v1 0/9] Refactoring Microchip PolarFire PCIe driver

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On Wed, Jul 19, 2023 at 06:20:48PM +0800, Minda Chen wrote:
> This patchset final purpose is add PCIe driver for StarFive JH7110 SoC.
>   dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties
> JH7110 using PLDA XpressRICH PCIe IP. Microchip PolarFire Using the
> same IP and have commit their codes, which are mixed with PLDA
> controller codes and Microchip platform codes.

I guess this actually adds TWO drivers: PCIE_PLDA_PLAT_HOST (claims
"plda,xpressrich-pcie-host" devices) and PCIE_STARFIVE_HOST (claims
"starfive,jh7110-pcie" devices), right?

> For re-use the PLDA controller codes, I request refactoring microchip
> codes, move PLDA common codes to PLDA files.
> Desigware and Cadence is good example for refactoring codes.
> 
> So first step is extract the PLDA common codes from microchip, and
> refactoring the microchip codes.(patch1 - 4)
> Then add the PLDA platform codes. (patch5, 6)
> At last, add Starfive codes. (patch7 - 9)
> 
> This patchset is base on v6.5-rc1

Doesn't quite apply cleanly for me:

  10:10:15 ~/linux (main)$ git checkout -b wip/minda-starfive-v1 v6.5-rc1
  Switched to a new branch 'wip/minda-starfive-v1'
  10:10:33 ~/linux (wip/minda-starfive-v1)$ git am m/20230719_minda_chen_refactoring_microchip_polarfire_pcie_driver.mbx
  Applying: dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties
  Applying: dt-bindings: PCI: microchip: Remove the PLDA common properties
  Applying: PCI: PLDA: Get PLDA common codes from Microchip PolarFire host
  Applying: PCI: microchip: Move PCIe driver to PLDA directory
  Applying: dt-bindings: PLDA: Add PLDA XpressRICH PCIe host controller
  Applying: PCI: PLDA: Add host conroller platform driver
  Applying: dt-bindings: PCI: Add StarFive JH7110 PCIe controller
  Applying: PCI: PLDA: starfive: Add JH7110 PCIe controller
  Applying: riscv: dts: starfive: add PCIe dts configuration for JH7110
  error: patch failed: arch/riscv/boot/dts/starfive/jh7110.dtsi:629
  error: arch/riscv/boot/dts/starfive/jh7110.dtsi: patch does not apply
  Patch failed at 0009 riscv: dts: starfive: add PCIe dts configuration for JH7110

>   dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties
>   dt-bindings: PCI: microchip: Remove the PLDA common properties
>   PCI: PLDA: Get PLDA common codes from Microchip PolarFire host
>   PCI: microchip: Move PCIe driver to PLDA directory
>   dt-bindings: PLDA: Add PLDA XpressRICH PCIe host controller
>   PCI: PLDA: Add host conroller platform driver

"controller"

>   dt-bindings: PCI: Add StarFive JH7110 PCIe controller
>   PCI: PLDA: starfive: Add JH7110 PCIe controller
>   riscv: dts: starfive: add PCIe dts configuration for JH7110

Use "PCI: plda: " prefix for PLDA things that are shared across
multiple drivers.

Use "PCI: starfive: " prefix for starfive-specific things.

This is the same as how drivers/pci/controller/dwc/* looks.

Bjorn



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