[U-Boot] RFC USB composite devices

[Tom]

Remy Bohmer wrote:
> Hi Tom,
> 
> 2009/9/28 Tom <Tom.Rix at windriver.com>:
>> Soon you will see a v2 of my OMAP3 USB device support.
>> After which I will be working on adding a 'fastboot' device.
>> Ref :
>> https://gforge.ti.com/gf/project/omapzoom/wiki/?pagename=FAQ-8%3A+Zoom-II+Android%C2%A0fastboot
>>
>> I would like to add this as composite device with the other device being
>> usbtty.
>>
>> The usb device and composite device support seems to be entirely based on
>> usbtty.Is there a newer interface that needs some help bringing to the
>> mainline? Else, ideas on how to do this cleanly ?
> 
> Well, I have the complete Linux gadget layer as USB device layer in
> U-boot. Maybe this helps. I have not found the time yet to push it
> forward...
> It can be found in the u-boot-usb branch.
> (http://git.denx.de/?p=u-boot/u-boot-usb.git;a=shortlog;h=refs/heads/cdc)
> 
> Remy

Thanks!
I have taken a look at this.
It looks like the reference is an ethernet over usb device on at91.
I have an at91sam9g20-ek. Is this compatibly with your work?
Else I will just jump in with omap.

Are there any missing pieces that I should be aware of?

Tom