On Tue, 17 Jul 2007, Branden Sletteland wrote: > > I'm at a loss. Clearly you've got weird hardware. Do you know of any > > other systems with the same type of host controller to compare against? > > We have an evaluation board with this host controller that behaves the > same way. A Google search of ISP1563 doesn't get many useful hits, so > it seems there aren't many uses of it or no one is advertising it. > > > > > I don't want to add in the delay you suggested, although maybe it would > > be okay if it were reduced down to just 1 ms. Is that long enough to > > make the thing work okay? > > Yes, I have been doing some testing and have been able to go as low as > 500 us, but that is probably getting rounded up since Hz is set to > 1000 in my build, and it is usually set at 250.
Then the solution is straightforward. You should create a quirks entry for this controller, and use it to decide whether to delay or call usb_hcd_poll_root_hub directly. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
