From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>
Cc: Felipe Balbi
<felipe.balbi-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Bin Liu <b-liu-l0cyMroinI0@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Kishon Vijay Abraham I <kishon-l0cyMroinI0@public.gmane.org>
Subject: Re: [PATCH 0/2] musb-fixes for v4.9-rc2
Date: Fri, 4 Nov 2016 07:35:42 -0700 [thread overview]
Message-ID: <20161104143542.GE21430@atomide.com> (raw)
In-Reply-To: <20161104094624.GA19642-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
* Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org> [161104 02:47]:
> On Fri, Nov 04, 2016 at 10:31:38AM +0200, Felipe Balbi wrote:
> [snip]
> > Sounds like VBUS dropping to me. Remember, MUSB is really anal about
> > VBUS levels. If it drops enough for the PHY to report one of those 4
> > VBUS levels, then MUSB just gives up.
> >
> > What we used to do back at Nokia was disable reporting of some of those
> > VBUS levels at the PHY driver.
Yeah that seems to be what Ladis is seeing.
> Well, I was getting these even without anything connected to musb:
> [ 1526.594696] musb-hdrc musb-hdrc.0.auto: VBUS_ERROR in a_idle (90, <VBusValid), retry #0, port1 00000104
> [ 485.244781] musb-hdrc musb-hdrc.0.auto: VBUS_ERROR in a_idle (90, <VBusValid), retry #0, port1 00000104
> ...and with the hub connected:
> [ 562.803833] musb-hdrc musb-hdrc.0.auto: VBUS_ERROR in a_idle (90, <VBusValid), retry #0, port1 00000507
> [ 50.068664] musb-hdrc musb-hdrc.0.auto: VBUS_ERROR in a_idle (90, <VBusValid), retry #0, port1 00000507
> And indeed, after these errors musb gives up.
>
> However these are gone with Tony's last patch. Bisecting now, approx 6 iterations left.
These were caused by devctl session bit taking few seconds to clear
so we have to poll that on disconnect until it clears.
Regards,
Tony
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prev parent reply other threads:[~2016-11-04 14:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1476896620-15432-1-git-send-email-b-liu@ti.com>
[not found] ` <20161020082318.GA2903@localhost.localdomain>
[not found] ` <20161020082318.GA2903-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-10-20 12:35 ` [PATCH 0/2] musb-fixes for v4.9-rc2 Tony Lindgren
[not found] ` <20161020123524.oepmqvlhzzu7elgj-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-10-20 19:36 ` Ladislav Michl
[not found] ` <20161020193612.GA29736-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-10-21 7:17 ` Tony Lindgren
[not found] ` <20161021071722.2cetd2mt23t245ao-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-10-24 18:07 ` Tony Lindgren
[not found] ` <20161024180708.kpx6s2jb7dpg6xfx-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-11-01 21:13 ` Ladislav Michl
[not found] ` <20161101211358.GA2597-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-11-03 20:59 ` Tony Lindgren
[not found] ` <20161103205902.GB21430-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-11-03 22:55 ` Tony Lindgren
[not found] ` <20161103225532.GD21430-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-11-04 0:09 ` Ladislav Michl
2016-11-04 10:40 ` Ladislav Michl
[not found] ` <20161104104026.GA27621-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-11-04 14:48 ` Tony Lindgren
[not found] ` <20161104144813.GF21430-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2016-11-04 18:02 ` Ladislav Michl
2016-11-04 8:31 ` Felipe Balbi
[not found] ` <87r36rk5n9.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-11-04 9:46 ` Ladislav Michl
[not found] ` <20161104094624.GA19642-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-11-04 10:03 ` Ladislav Michl
2016-11-04 14:35 ` Tony Lindgren [this message]
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