Re: [REGRESSION] mainline/master: PCI link creation fails on Apalis iMX6

[Francesco Dolcini]

On 26 August 2026 16:11:46 CEST, Thorsten Leemhuis <regressions at leemhuis.info> wrote:
>On 8/10/26 23:12, Francesco Dolcini wrote:
>> On Mon, Aug 10, 2026 at 02:54:45PM -0300, Leonardo Costa wrote:
>>> We are seeing a regression on Apalis iMX6 where connected PCI device
>>> links fail to come up at initialization, as shown below. The issue is
>>> not on the devices' physical connection, as they worked properly on v7.1
>>> and are working on other stable kernel versions.
>> 
>> just to make this more clear.
>> 
>> 610fa91d9863 ("PCI: imx6: Assert PERST# before enabling regulators")
>> introduced a regression that prevented the boot. because of that we were
>> not able to run any of our test in our CI/CD
>> 
>> commit 7678e81498e2 ("PCI: imx6: Fix i.MX6Q/DL boot hang caused by improper PHY power sequencing")
>> fixes the boot issue, but now PCIe is not longer working
>Just wondering: what the status of this regression? I feel a bit lost here.
>
>It looks like people were really keen on getting this resolved for 7.2
>-- even multiple revert were considered, but not performed in the end
>(not judging here, just mentioning it). Three days after the quoted mail
>(and thus even before 7.2 was out) Richard Zhu posted a fix afaics:
>
>https://lore.kernel.org/all/20260813095003.356062-1-hongxing.zhu@oss.nxp.com/
>
>But that still sits on the list and did not even receive a tested-by. Is
>it not that urgent anymore for some reason I cannot see? Are developers
>waiting for test-results from affected people? Or did this fall through
>the cracks?

It did fall though the cracks. The patch was tested before being sent as a formal patch.
We are just waiting for the maintainer to apply it.

Francesco 

>
>Ciao, Thorsten