Re: Non systematic PCIe error on resume on i.MX8QP on Linux 7.2

[Francesco Dolcini <francesco@dolcini.it>]

On Mon, Jul 20, 2026 at 09:16:27AM +0000, Hongxing Zhu wrote:
> > -----Original Message-----
> > From: Francesco Dolcini <francesco@dolcini.it>
> > Sent: Monday, July 20, 2026 1:28 PM
> > To: Hongxing Zhu <hongxing.zhu@nxp.com>; Frank Li <frank.li@nxp.com>; linux-
> > pci@vger.kernel.org; imx@lists.linux.dev
> > Cc: l.stach@pengutronix.de; lpieralisi@kernel.org; kwilczynski@kernel.org;
> > mani@kernel.org; robh@kernel.org; bhelgaas@google.com;
> > s.hauer@pengutronix.de; kernel@pengutronix.de; festevam@gmail.com; linux-
> > pci@vger.kernel.org
> > Subject: Non systematic PCIe error on resume on i.MX8QP on Linux 7.2
> > 
> > Hello,
> > our CI spotted this error on resume. It is not systematic, and it is possible that this
> > is not a new issue from 7.2.
> > 
> > Does it rings any bell?
> > 
> > [  745.849237] imx8qm-hsio-phy 5f180000.phy: HSIO_PM_REQ_CORE_RST is set
> > [  745.855800] phy phy-5f180000.phy.1: phy poweron failed --> -110
> Based on the log, the PHY initialization is failing during resume.  I'll set
> up a platform on my end to see if I can reproduce this issue consistently.

Thanks for the support, appreciated.

> BTW, is this occurring on the i.MX8QM MEK board?
The issue is on apalis-imx8 (you can find the DT in the usual place in
the linux kernel tree).

> What's the frequency of occurrence in CI (failure rate)?
The last batch was 3 failure in 10 executions, so 30%.

Francesco