Re: [Uclinux-dist-devel] [PATCH] usb: musb: make extvbus depend on the related register

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On Tue 9 Mar 2010 08:58, Gadiyar, Anand pondered:
> > The Blackfin MUSB is unable to support MUSB_ULPI_BUSCONTROL, so disable
> > the code if the register is not defined.  This fixes building again.
> > 
> > Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
> 
> Mike,
> 
> No complaints with this patch as is, but to get rid of the ifdefs,
> do you think it would be better to use wrapper functions again?
> 
> Also, a general questions about MUSB on blackfins - is the limitation
> because the ULPI access registers are completely missing on the blackfins,
> or is it simply because we don't have the defines for blackfin.

The USB PHY on current Blackfin processors is a UTMI+ level 2 PHY. However, it 
has no ULPI support - so there are no registers at all.
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