[PATCH 6/9] usb: chipidea: add PTW and PTS handling

[mgr@pengutronix.de (Michael Grzeschik)]

On Fri, Nov 16, 2012 at 02:45:39PM +0200, Alexander Shishkin wrote:
> Michael Grzeschik <m.grzeschik@pengutronix.de> writes:
> 
> > This patch makes it possible to configure the PTW and PTS bits inside
> > the portsc register for host and device mode before the driver starts
> > and the phy can be addressed as hardware implementation is designed.
> >
> > Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
> > Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
> > ---
> >  drivers/usb/chipidea/bits.h        |    3 +++
> >  drivers/usb/chipidea/ci.h          |    2 ++
> >  drivers/usb/chipidea/ci13xxx_imx.c |    1 +
> >  drivers/usb/chipidea/core.c        |   47 ++++++++++++++++++++++++++++++++++++
> >  drivers/usb/chipidea/host.c        |    4 +++
> >  include/linux/usb/chipidea.h       |    9 +++++++
> >  6 files changed, 66 insertions(+)
> >
> > diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
> > index 4b6ae3e..3cded5f 100644
> > --- a/drivers/usb/chipidea/bits.h
> > +++ b/drivers/usb/chipidea/bits.h
> > @@ -48,6 +48,9 @@
> >  #define PORTSC_SUSP           BIT(7)
> >  #define PORTSC_HSP            BIT(9)
> >  #define PORTSC_PTC            (0x0FUL << 16)
> > +#define PORTSC_PTS            (BIT(31) | BIT(30))
> > +#define PORTSC_PTW            BIT(28)
> > +#define PORTSC_STS            BIT(29)
> 
> Hm, my spec says these are actually in DEVLC register and only have this
> meaning in device mode. And in portsc these bits fall in device address
> bitfield. Can you refer me to your spec?

You can find it here:
http://cache.freescale.com/files/32bit/doc/ref_manual/iMX53RM.pdf?fpsp=1
Page 4947

We as well do have the original documentation from Synopsys in which there
there is an DEVLC register in the index, but nowhere else in the Datasheet.

June 2011 - Doc.Rev. 2.40a
USB 2.0 High Speed Atlantic Controller

Unfortunately, its not possible for me to share this document.

Thanks,
Michael
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