I guess my question should have been: Would it be possible using the controller that's built into the MPC875?
Is there a USB host controller driver in Linux which is working reliably?
The short answer is: not that I know of, but I sure hope there is. Right now I'm still looking for a driver that would work with an MPC8xx's built-in USB HCI. So far the only mention I've seen of such a thing was from some posts that go a few years back saying that there was no driver for a 2.6.x kernel and the one for 2.4.x was not too good either, and that was for pre-MPC875 CPUs.
I thought somebody would have written something, but I'm starting to wonder if I'll have to put something together myself. I can't seem to find much good info on how to get this working in either U-Boot or Linux.
Ultimately, I need USB to work in Linux and not so much in U-Boot, but for now I need whichever one I can get to work faster.
Mikhail Zaturenskiy