linux-kernel - Re: USB EHCI chipidea regression on NXP i.MX7

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Message-ID: <Z6Cs0PeC2O6enO7R@eichest-laptop>
Date: Mon, 3 Feb 2025 12:47:28 +0100
From: Stefan Eichenberger <eichest@...il.com>
To: Francesco Dolcini <francesco@...cini.it>
Cc: Xu Yang <xu.yang_2@....com>, ritesh.kumar@...adex.com,
	linux-usb@...r.kernel.org, Peter Chen <peter.chen@...nel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: USB EHCI chipidea regression on NXP i.MX7

Hi everyone,

On Fri, Jan 10, 2025 at 09:16:18AM +0100, Francesco Dolcini wrote:
> Hello,
> 
> On Fri, Jan 10, 2025 at 02:51:01PM +0800, Xu Yang wrote:
> > On Thu, Jan 09, 2025 at 10:20:20AM +0100, Francesco Dolcini wrote:
> > > On Thu, Jan 09, 2025 at 03:35:00PM +0800, Xu Yang wrote:
> > > > > If the USB port is connected to a USB HUB, and a device is connected at
> > > > > boot time to such a hub, the following errors are printed and the USB
> > > > > port is not functional.
> > > > 
> > > > Does this happen 100%?
> > > > I tried many time on i.MX7ULP-EVK board, but I can't reproduce this issue.
> > > 
> > > The issue happens with i.MX7D.
> > 
> > Then I think this issue is not related to that commit.
> > I also tried on i.MX7D, but I still can't reproduce it.
> >
> > Please firstly confirm few questions in last mail.
> 
> Thanks Xu Yang for trying this out.
> 
> Ritesh: can you help here?

We did some more tests on our (Toradex) side and the issue is not
related to the mentioned commit. We sent a first patch which tries to
address the issue:
https://lore.kernel.org/all/20250203105840.17539-1-eichest@gmail.com/

Sorry for the false alert.

Regards,
Stefan