Does anyone know where I can find the discussion explaining how that came to be? All of the documentation on USB 2.0 that I can find indicates full backwards compatibility.
This thread lays it all out.
As I understand it, it came down to a lack of space. The OMAP3 only has the built-in capability for one "full featured" USB port, and that's the OTG port. The full sized host port has high speed capability, but it lacks the low/full speed logic and requires a hub to talk to these devices. The smallest USB hub chip I am aware of is a 48pin QFP. Not a huge chip, but still too big to fit anywhere convenient, and wiring said chip would have necessitated a major board redesign. It may be an inconvenience, but there was simply no good way to work around the OMAP limitations with the time and money allotted.