Re: [PATCH v6 08/11] PCI: dwc: Invoke post_init in dw_pcie_resume_noirq()

Bjorn Helgaas
2026-01-20T22:04:42Z

On Fri, Jan 09, 2026 at 09:27:50AM -0600, Bjorn Helgaas wrote:
> ...

> The current commit log for this patch is this:
>
> Some SoCs like i.MX95 require enabling REFCLK after resuming from suspend
> in their post_init callback. So invoke the callback at the end of
> dw_pcie_resume_noirq() if available.
>
> When .post_init() is called, the link is already up and PCIe devices
> have already been enumerated. I think REFCLK is required for the link
> to come up, so it doesn't sound right to me that .post_init() would be
> *enabling* REFCLK.

This never got resolved.

https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/commit/?h=controller/dwc-imx6&id=199c18221622
says imx_pcie_host_post_init() enables REFCLK by applying the
IMX_PCIE_FLAG_8GT_ECN_ERR051586 workaround.

I don't think that commit log is correct. Can you please supply some
correct text for that commit?

Bjorn