Re: [REGRESSION] mainline/master: Apalis iMX6 no longer boots

[Bjorn Helgaas]

On Thu, Jul 16, 2026 at 02:15:42AM +0000, Hongxing Zhu (OSS) wrote:
> > On Mon, Jun 29, 2026 at 11:34:32AM -0300, Leonardo Costa wrote:
> > > We are seeing a regression on Apalis iMX6 where the kernel
> > > doesn't boot in the newest v7.2-rc1 (it was working before, in
> > > v7.1). The device tree being used is the imx6q-apalis-eval.dtb.
> > > The kernel configuration
> > > used is the one shown below:
> ...

> > Can somebody confirm that reverting 610fa91d9863 fixes this
> > regression, or at least that 610fa91d9863^ works and 610fa91d9863
> > fails?
>
> Sorry for this severe regression. I have posted a fix that has been
> tested on my i.MX6Q SabreSD board:
> 
> https://lore.kernel.org/imx/20260708035928.580236-2-hongxing.zhu@xxxxxxxxxxx/

My question was whether somebody had actually bisected to 610fa91d9863
("PCI: imx6: Assert PERST# before enabling regulators").  I don't see
anything specific on the mailing list, so I don't know how
610fa91d9863 got blamed for the regression.

https://linux-regtracking.leemhuis.info/regzbot/mainline/ lists this
as a regression caused by 610fa91d9863, which means we need (1) the
details to prove that 610fa91d9863 actually caused it and (2) a tested
revert or fix.