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Date: Fri, 10 Jun 2016 10:59:40 -0500
From: Bin Liu <b-liu@ti.com>
To: joerg Reisenweber <joerg@openmoko.org>
CC: Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>,
        Tony Lindgren <tony@atomide.com>,
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        Aaro Koskinen <aaro.koskinen@iki.fi>, Pavel Machek <pavel@ucw.cz>,
        Nishanth Menon <nm@ti.com>, Felipe Balbi <balbi@kernel.org>
Subject: Re: Nokia N900: musb is in wrong state after boot
Message-ID: <20160610155940.GB28283@uda0271908>
Mail-Followup-To: Bin Liu <b-liu@ti.com>,
	joerg Reisenweber <joerg@openmoko.org>,
	Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>,
	Tony Lindgren <tony@atomide.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-omap@vger.kernel.org,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
	Sebastian Reichel <sre@kernel.org>,
	Aaro Koskinen <aaro.koskinen@iki.fi>, Pavel Machek <pavel@ucw.cz>,
	Nishanth Menon <nm@ti.com>, Felipe Balbi <balbi@kernel.org>
References: <201601091616.04193@pali>
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 <20160610150808.GA28283@uda0271908>
 <86213272.dICX26rd7d@saturn>
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Hi,

On Fri, Jun 10, 2016 at 05:23:11PM +0200, joerg Reisenweber wrote:
> On Fri 10 June 2016 10:08:08 Bin Liu wrote:
> > Hi,
> > 
> > On Thu, Jun 09, 2016 at 11:25:57PM +0200, joerg Reisenweber wrote:
> > > On Thu 09 June 2016 15:58:56 Bin Liu wrote:
> > > > But I am not sure how this will fix n900 host mode problem, since
> > > > testmode is not used in normal operation.
> > > 
> > > Please see http://talk.maemo.org/showthread.php?p=685367 and
> > > http://maemo.org/packages/view/hostmode-gui/ which indeed is _no_ normal
> > > hostmode but an implementation of a workaround that exploits the force
> > > host
> > > test mode (among others)
> > 
> > What I meant was that it is okay for hobby, but you don't want to
> > something that the IP vender does not support in real products.
> 
> 
> You lost me.

Sorry.

The musb ug says the testmde is not used in normal operation, so my
opinion is force_host should not be used for hacking n900 host mode if
this is for real product development or support.

Regards,
-Bin.