linux-kernel - Re: Nokia N900: musb is in wrong state after boot

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Date:	Fri, 10 Jun 2016 10:59:40 -0500
From:	Bin Liu <b-liu@...com>
To:	joerg Reisenweber <joerg@...nmoko.org>
CC:	Pali Rohár <pali.rohar@...il.com>,
	Tony Lindgren <tony@...mide.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	Sebastian Reichel <sre@...nel.org>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pavel Machek <pavel@....cz>, Nishanth Menon <nm@...com>,
	Felipe Balbi <balbi@...nel.org>
Subject: Re: Nokia N900: musb is in wrong state after boot

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.