From: Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>
To: Felipe Balbi <felipe.balbi-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@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 10:46:24 +0100 [thread overview]
Message-ID: <20161104094624.GA19642@localhost.localdomain> (raw)
In-Reply-To: <87r36rk5n9.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
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.
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.
Best regards,
ladis
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next prev parent reply other threads:[~2016-11-04 9:46 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 [this message]
[not found] ` <20161104094624.GA19642-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2016-11-04 10:03 ` Ladislav Michl
2016-11-04 14:35 ` Tony Lindgren
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