On Friday 13 April 2007 10:26 am, Laurent Pinchart wrote: > > The driver needs to find the relationship between the host clock and the > device clock. The device clock/SOF counter synchronisation can be achieved > using the SCR values received with every data packet, but I found no easy way > to synchronise the SOF counter and host clock.
Yeah, that's been kind of a weak point for a long time. Nobody had tried to use those interfaces, so it sure looked to me like they were likely not doing the right things yet ... Now that high precision timestamps are starting to become widely available, it's a good time for those of you who have stronger requirements to help resolve the iso (and interrrupt) transfer synch issues for USB. Patches are of course a good way to make concrete proposals. :) - Dave ------------------------------------------------------------------------- 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/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
