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

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Message-ID: <20231202002625.ujvqghwm42aabc2f@synopsys.com>
Date:   Sat, 2 Dec 2023 00:26:34 +0000
From:   Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To:     Köry Maincent <kory.maincent@...tlin.com>
CC:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        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

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?

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.

Hi Lisheng,

Did you see any reported issue before your change were applied? If not,
perhaps we should revert the changes related to soft-reset for this.

Thanks,
Thinh