> > Instead, I think having the id hanging off the class driver is much > > better, as it allows mapping the actual hardware to the id more clearly. > > > > So I'd drop the "timesource" listing. And maybe change "id" to > > "clock_id" so its a little more clear what the id is for. > > Okay, I will drop /sys/class/timesource (hope Alan Cox agrees :)
It makes sense to hang anything off the physical id > I threw it out there mostly for the sake of discussion. I imagined > that there could be other properties in that directory, like time > scale (TAI, UTC, etc). But it seems like we don't really need anything > in that direction. They can still hang off the physical device. Thats really a detail > > interrupts are awfully frequent, so systems concerned with power-saving > > and deep idles probably would like something that could be done at a > > more coarse interval. > > We could always make the pulse rate programmable, for power-saving > applications. I would expect the kernel drivers to be responsible for - Turning off when they can - Picking rates that are power optimal for the requirement The latter is a bit interesting as I don't see anything in any of the timer APIs to express accuracy (a problem we have in kernel too). Historically it simply hasn't mattered. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
