On Fri, Jan 05, 2007 at 07:49:00PM -0800, David Brownell wrote: > > Those rtc's actually have a 1/100th of second > > register. Should the generic rtc interface not support that? > > Are you implying a new userspace API, or just an in-kernel update?
My only concern at the moment is initializing linux's timeofday from the rtc quickly and with a good precision. The way it is done currently in drivers/rtc/hctosys.c is 0.5 sec off. We could obtain a much better precision by looping there until the next change (next second for old clocks, next 0.01 second for m41t81, maybe even better for other ones). > > Either way, that raises the question of what other features should > be included. What sub-second precision? Multiple alarms? Ways > to manage output clocks? Sub-HZ periodic alarms? I cannot answer that, but others may have other needs. Philippe -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
