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From: alex zheng <tc0721@gmail.com>
To: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>,
	David Laight <David.Laight@aculab.com>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"xiaowei.zheng@dji.com" <xiaowei.zheng@dji.com>,
	Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Subject: Re: BUG report: usb: dwc3: Link TRB triggered an intterupt without IOC being setted
Date: Fri, 25 Oct 2019 16:44:34 +0800	[thread overview]
Message-ID: <CADGPSwhg=HgGL+J0kvgu=uZAo+_E9W3Aj3nLRDsyr4FoLs=8Wg@mail.gmail.com> (raw)
In-Reply-To: <87v9sfixv3.fsf@gmail.com>

Hi,

Felipe Balbi <felipe.balbi@linux.intel.com> 于2019年10月23日周三 下午6:02写道：
>
>
> Hi,
>
> (please don't top-post)
>
> alex zheng <tc0721@gmail.com> writes:
> > Hi, all
> >
> > We found that this is a known issue of synopsys DWC3 USB controller,
> > when the PARKMODE_SS of DWC3 is enable, the controller may hang or do
> > wrong TRB schedule in some heavy load conditions.
> >
> > Setting DISABLE_PARKMODE_SS to 1 can work around this bug.
>
> Is this something that affects some versions but not others? If the
> case, we should teach the driver to handle this based on a revision
> check.

It seems that all DWC3 USB3.0 controller witch have parkmode_ss may
run into this issue, but we did not do a further test, and I find that
there is already a fix patch in maillist yesterday, see title: usb:
"dwc3: Update entries for disabling SS instances in park mode"

>
> cheers


>
> --
> balbi

  reply	other threads:[~2019-10-25  8:45 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-22  8:34 BUG report: usb: dwc3: Link TRB triggered an intterupt without IOC being setted alex zheng
2019-09-23  5:36 ` Felipe Balbi
2019-09-23  7:08   ` alex zheng
2019-09-23 10:15     ` Mathias Nyman
     [not found]       ` <CADGPSwi87a5+3mCGAgptHgpBsQk9STQrEKs-kC6Nw55nPdRtOw@mail.gmail.com>
2019-09-25 14:48         ` Mathias Nyman
2019-09-25 16:22           ` David Laight
2019-09-26  5:45             ` Felipe Balbi
2019-09-26  8:21               ` Mathias Nyman
2019-09-26 10:38                 ` alex zheng
     [not found]                   ` <CADGPSwhCPvdu=KmQP6RHMJnh292UO0uBAt+KyJqqOWY5DWDc3w@mail.gmail.com>
2019-10-23  9:52                     ` alex zheng
2019-10-23 10:01                       ` Felipe Balbi
2019-10-25  8:44                         ` alex zheng [this message]
2019-09-23 10:45     ` Felipe Balbi
2019-09-24 14:19       ` alex zheng

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