[PATCH 4/5] [ARM] usb/host/ohci-pxa27x: make PXA310 USB OTG port work in host mode.

[Eric Miao]

On Sun, Jun 13, 2010 at 2:57 PM, Mike Rapoport <mike at compulab.co.il> wrote:
> Eric Miao wrote:
>>
>> On Wed, Jun 2, 2010 at 3:40 PM, Igor Grinberg <grinberg at compulab.co.il>
>> wrote:
>>>
>>> Signed-off-by: Igor Grinberg <grinberg at compulab.co.il>
>>> Signed-off-by: Mike Rapoport <mike at compulab.co.il>
>>> ---
>>>  arch/arm/mach-pxa/include/mach/ohci.h     |    3 +
>>>  arch/arm/mach-pxa/include/mach/regs-u2d.h |    2 +
>>>  drivers/usb/host/ohci-pxa27x.c            |  183
>>> +++++++++++++++++++++++++++++
>>
>> My feeling is on pxa310, the OTG/ULPI is actually closer to the UDC, so
>> generally, I'd really like to see minimum change to ohci.
>
> There are certain registers set up that should be done in order to enable
> the pxa310 otg port in the host mode. I agree that most of them should be
> done in the UDC driver, but since there's no UDC driver at all for pxa310,

Wow, that's a big problem.

> the most logical place for those register set ups would be pxa ohci glue
> driver.
>

So, is there a simple way to setup the ULPI for the host within mach-pxa/*?
We need really really simple code for that, so it has minimum impact when
we move that part into pxa310-udc.c? I still want ohci-pxa27x to remain
minimum impacted.