USB OTG support on mx27pdk

[Peter Chen]

> 
> Sun, 20 Apr 2014 00:48:28 +0000 от Peter Chen <Peter.Chen at freescale.com>:
> > > -----Original Message-----
> > > From: Fabio Estevam [mailto:festevam at gmail.com]
> > > Sent: Sunday, April 20, 2014 1:10 AM
> > > To: Chen Peter-B29397
> > > Cc: Michael Grzeschik; Alexander Shiyan; linux-arm-
> > > kernel at lists.infradead.org; linux-usb at vger.kernel.org; Sascha Hauer;
> > > chris.ruehl at gtsys.com.hk; Guo Shawn-R65073
> > > Subject: Re: USB OTG support on mx27pdk
> > >
> > > On Sat, Apr 19, 2014 at 4:32 AM, Peter Chen <Peter.Chen at freescale.com>
> > > wrote:
> > > > The below patch is intended to fix above issues for all platforms,
> > > > I have tested it at imx6 platform, if possible, have a test at
> > > imx25/imx27
> > > > please.
> > >
> > > I don't see any patch below, but anyway I have managed to fix the
> > > issue on mx27 at dts level.
> > >
> >
> > https://github.com/hzpeterchen/linux-
> usb/commit/c1f42ea27ed3f5d988c63da7849d2e6b445b4fbc
> >
> > Your problem is different with sasche's, which hang the system due to
> > no phy clk. The chris's patch should not cause the oops.
> 
> For me, nothing has changed.
> The driver works on i.MX27 PCM970 RDK with the patch as well as without
> it.
> 

Thanks for testing. This patch does not change the flow for ulpi, it changes
pts at portsc first, and call ulpi_init if it exists, your results prove that
the patch works ok if the kernel does not touch ulpi.

Peter