Hi! > > While operation A2 is PM domain-centric (it walks the list of genpd domains), > > A3 and B3 are device-centric (A3 operates on one specific device, B3 walks the > > list of devices). > > Hence B3 never touches PM domains that don't contain any devices[*]. > > So these PM domains are kept powered-up if CONFIG_PM_RUNTIME=n, even on > > system suspend. > > > > Shouldn't PM domains without devices be powered down at some point? > > When? In B2, or in B3? > > I agree with Rafael and Sylwester, that it would be an advantage if PM > domains can be initialized in powered off state. Simply because, those > may then be left in powered off state all the time, if they are > unused. Also... powering up all the domains at the same time is quite harsh at the battery. Even if they are powered down "soon", it still causes spike in current which may trip the battery (especially when battery is old and nearly discharged). > > P.S. Will any of you be at ELC-E next week, for further PM domain discussions? > > That would have been great, but I won't be there. Unless I schedule a > last minute trip. :-) I should be there. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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