RE: [PATCH][v2]fsl/usb:Add controller version based ULPI and UTMI phy support

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> > On Mon, Jan 30, 2012 at 12:36:12PM +0530, Ramneek Mehresh wrote:
> > > Add support for ULPI and UTMI PHYs based on usb controller version
> > > info read from device-tree
> > >
> > > Example of USB Controller versioning info:
> > > Version 1.2 and below : MPC8536, MPC8315, etc Version 1.6 : P1020,
> > > P1010, P2020, etc Version 2.2 : PSC9131, PSC9132, P3060, etc
> > >
> > > Signed-off-by: Ramneek Mehresh <ramneek.mehresh@xxxxxxxxxxxxx>
> > > ---
> > > Changes for v2:
> > > 	- Incorporated Greg's comment
> > > 		- moved fsl_usb.h from drivers/usb/misc
> > > 		  to drivers/usb/host/fsl/
> > >
> > >  drivers/usb/gadget/fsl_udc_core.c |   25 ++++++++++++++-
> > >  drivers/usb/gadget/fsl_usb2_udc.h |   13 ++++++++
> > >  drivers/usb/host/ehci-fsl.c       |   35 +++++++++++++++++----
> > >  drivers/usb/host/ehci-fsl.h       |   15 ++++++++-
> > >  drivers/usb/host/fsl/fsl_usb.h    |   61
> > +++++++++++++++++++++++++++++++++++++
> > >  5 files changed, 141 insertions(+), 8 deletions(-)  create mode
> > > 100644 drivers/usb/host/fsl/fsl_usb.h
> > >
> > > diff --git a/drivers/usb/gadget/fsl_udc_core.c
> > > b/drivers/usb/gadget/fsl_udc_core.c
> > > index d7ea6c0..3c28887 100644
> > > --- a/drivers/usb/gadget/fsl_udc_core.c
> > > +++ b/drivers/usb/gadget/fsl_udc_core.c
> > Hi ramneek, Freescale i.MX SoCs also use fsl_udc_core.c for device
> > function.
> > Can you change the patch and let your added code can be not called by
> > i.mx SoC?
> > Host is ok, as it uses ehci-mxc.c.
> >
> > [Ramneek]: Hi Peter, the basic thinking behind this patch is that fsl
> > usb driver should not be concerned with the SOC. It should only be
> > concerned with controller/IP version. This is done to prevent driver
> > code contamination with SOC based code/macros. Moving forward, this
> > code change will ensure easy code maintainability for fsl usb driver ...
> >
> > To make this code work for all fsl qoriq and older plarforms, I sent a
> > patch for "controller version" information inside all platform device-
> > trees. I would recommend the same for i.mx. please let me know if you
> > need help for including controller version info for i.mx platforms
> >
> You mean for all controllers information for i.mx at device-tree file?
> I have cc-ed i.mx device-tree guys, I don't know the progress for i.mx
> device tree.
> 
> [Ramneek]: Yes Peter, all this collected information was collected from
> relevant people, and updated
> 		for qoriq based fsl socs...
> 		Just the version based information needs to be put inside
> device-tree. i.mx device-tree guys can
> 		refer to my patch in powerpc branch for this
> 
 
But currently, as far as I know, the device tree support is incomplete at i.mx, many platforms
have no device tree support. Can you add some conditions for device driver/non-device tree, and
ppc/arm, some registers don't exist at i.mx soc. FSL ppc and arm uses the same usb controller, but
the USB PHYs are different for two platforms.

BR,
Peter

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