Re: [PATCH v2 07/15] PCI: rcar-gen4: Separate hardware setup from resource acquisition

[Marek Vasut]

On 9/28/26 6:52 PM, Koichiro Den wrote:
> Factor out the hardware setup needed by Root Port recovery into helpers.
> Recovery needs to reset and restore the controller while keeping its
> clocks enabled and the Gen5 PHY initialized.
>
> - From rcar_gen4_pcie_common_init(), extract the power reset and mode
>    setup. Leave clock enabling and Application/Local reset control in
>    common_init(), so recovery can keep the APP registers accessible.
>
> - From the V4H/V4M and Gen5 .init() callbacks, extract the SoC-specific
>    register setup. This allows recovery to restore those settings without
>    taking another clock or PHY initialization reference.
>
> - From rcar_gen4_pcie_host_init(), extract the Root Port register setup
>    and PERST# release. Both paths need this host-specific sequence after
>    the per-SoC initialization or reset.
>
> No functional changes.
>
> Signed-off-by: Koichiro Den <den@xxxxxxxxxxxxx>

Reviewed-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>