USB OHCI device port on Alchemy
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Quoted 8 lines · Jeff Baitis
Quoted 3 lines
Out of curiousity:
Has anyone played with the AU1X00 USB device port yet? If not, what would yo
u
Quoted 2 lines
guys suggest that the AU1X00 appear as? USB over Ethernet? Or maybe a simple dummy device that will perform bulk transfers?
I'm surprised no one has mentioned all the bugs :-)
Just so you know, the function side controller (i.e. "device") on the au1100 is/was seriously buggy. The folks at AMD are (or were) working on a fix. It was possible to get it to work, but it was very painful.
I don't remember the details of the chip revs, but as I recall all of the au1100 parts which had been released as of the end of last year had these bugs.
[fyi: the folks at Belcarra have done a lot of work on this problem and know it well]
The ohci controller (i.e. "host") works fine, as far as I know, for all modes (interrupt, bulk, isochronous).
-brad