linux-kernel - Re: [PATCH] usb: dwc3: don't reset device side if dwc3 was configured as host-only

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Message-ID: <20231205151959.5236c231@kmaincent-XPS-13-7390>
Date:   Tue, 5 Dec 2023 15:19:59 +0100
From:   Köry Maincent <kory.maincent@...tlin.com>
To:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc:     Jisheng Zhang <jszhang@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lu jicong <jiconglu58@...il.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH] usb: dwc3: don't reset device side if dwc3 was
 configured as host-only

On Sat, 2 Dec 2023 00:26:34 +0000
Thinh Nguyen <Thinh.Nguyen@...opsys.com> wrote:

> Hi,
> 
> On Fri, Dec 01, 2023, Köry Maincent wrote:
> > On Tue, 21 Nov 2023 10:49:17 +0100
> > Köry Maincent <kory.maincent@...tlin.com> wrote:
> >   
> > > Hello Thinh,
> > > 
> > > On Fri, 17 Nov 2023 01:55:30 +0000
> > > Thinh Nguyen <Thinh.Nguyen@...opsys.com> wrote:  
> >   
> > > Still not working on my side.  
> > 
> > Hello,
> > 
> > Just wondering if you have received my email as you said having client mail
> > issue.
> >   
> 
> Sorry for the delay. Things got busy for me recently.
> 
> So your platform has multiple ports. Do you use UTMI or ULPI phy?

It uses USB3220 ULPI phy.

> I forgot another thing, the phy reset we're doing now doesn't apply to
> ULPI phys. We may need to teach HCRST to dwc3, this may not look clean.

So that is the reason it does not apply for my case.

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com