From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ladislav Michl Subject: Re: [PATCH 0/2] musb-fixes for v4.9-rc2 Date: Fri, 4 Nov 2016 10:46:24 +0100 Message-ID: <20161104094624.GA19642@localhost.localdomain> References: <1476896620-15432-1-git-send-email-b-liu@ti.com> <20161020082318.GA2903@localhost.localdomain> <20161020123524.oepmqvlhzzu7elgj@atomide.com> <20161020193612.GA29736@localhost.localdomain> <20161021071722.2cetd2mt23t245ao@atomide.com> <20161024180708.kpx6s2jb7dpg6xfx@atomide.com> <20161101211358.GA2597@localhost.localdomain> <20161103205902.GB21430@atomide.com> <87r36rk5n9.fsf@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <87r36rk5n9.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Felipe Balbi Cc: Tony Lindgren , Bin Liu , linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Kishon Vijay Abraham I List-Id: linux-omap@vger.kernel.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,