On Thu, 24 Mar 2005, David Brownell wrote: > On Thursday 24 March 2005 7:48 am, Patrick Mochel wrote: > > What about this "big sleep" and "deep sleep" stuff? What platform were > > those for? Is there documentation about them? > > The terms apply at least to OMAP, and there's plenty of documentation > for those chips. Look at the OMAP 5912 docs: > > http://focus.ti.com/omap/docs/omapgenpage.tsp?navigationId=12341&templateId=5663&path=templatedata/cm/omapproc/data/omap5912 > > You'll have to register to get those (vs an NDA for an almost-identical > version used inside cell phones -- yes, some Linux based ones too! -- which > is one-big-PDF instead of lots of little one-per-chapter ones) and then > the "Power Management" reference guide, SPRU753, talks about those details. Thanks. > Other platforms could use the same names differently of course. Capsule > summary, "deep" means there's only a 32KHz clock, while "big" means the > 48 MHz one is available to peripherals that need it (UARTs, USB, MMC/SD, > camera, and so forth). It sounds like they refer to low-power states in which the system is still operating, which are distinct from the STD/STR/Standby that we're used to that are non-operational low-power states. Is that correct? Pat
