Re: [PATCH resend 1/3] AM35x: Add musb support

[Tony Lindgren <tony@atomide.com>]

* Gupta, Ajay Kumar <ajay.gupta@ti.com> [100706 10:17]:
>
> As musb controllers are quite different between OMAPs and AM35x so it
> would be difficult in terms of software maintenance with such approach.

Hmm, this is all pretty standard stuff..
 
> Some of the major changes in AM35x are,
> 	- Has builtin USB PHY

Register the PHY from platform data.

> 	- It doesn't use Mentor DMA but uses CPPI4.1 DMA

Register DMA functions from platform data.

> 	- Has set of wrapper register which are not present on OMAPs.

Yeah tusb6010 has the same problem, but that's already dealt with
I believe.

> 	- Doesn't have SYSCONFIG registers which are present on OMAPs.
> 	- Has bytewise read limitation which is not applicable to OMAPs.

Sounds like this has been mostly dealt with already with tusb6010.
 
> Musb on AM35x is actually quite similar to musb on DA8xx family of
> Devices.
> 
> I can update the patches to use USB_MUSB_AM35X config within 
> drivers/usb/musb/ but that would still not be able to compile in
> Both omapx and am35x stuff in single binary.

Sounds like we should first fix thing before adding new code
that will make fixing the basic issues harder.

Tony