Re: [PATCH v5 0/3] usb: multi-phy support

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On Tue, Jun 12, 2012 at 01:20:16PM +0200, Marek Vasut wrote:
> Dear Felipe Balbi,
> 
> > On Tue, Jun 12, 2012 at 12:53:15PM +0200, Marek Vasut wrote:
> > > Dear Kishon Vijay Abraham I,
> > > 
> > > > Patch series modifies the otg library to add support for multiple phys
> > > > and to get a phy by type. This was initally developed to add support
> > > > for omap5 which has both usb2 phy and usb3 phy.
> > > > 
> > > > It also does some cleanup like renaming _transceiver with _phy and
> > > > usb_set_transceiver is replaced with usb_add_phy to make it similar to
> > > > other usb standard function names like usb_add_hcd.
> > > > 
> > > > Changes from v4:
> > > > * Rebased on
> > > > http://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next
> > > 
> > > Reviewed-by: Marek Vasut <marex@xxxxxxx>
> > > 
> > > btw. this was probably asked before, but do you think it's a good idea to
> > > tell the PHYs apart by type?
> > 
> > Can you suggest any other way ? Type is probably not scalable, that's
> > for sure. If you have any other ideas, pleas share them.
> 
> It's not scalable indeed -- ie. on mx28, there're two PHYs which are basically 
> the same. Though I have not a real suggestion, sorry.

Yeah, on OMAP5 we use the same PHY controller (two instances of it) for
USB3 and SATA signalling. So, what we need, actually, is a kernel-wide
PHY layer. But that'll take time...

-- 
balbi

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