Balaji Rao wrote: > OK. MEMLDO is used to keep the SDRAM powerd when we are in pmu-standby.
Hmm, interesting. That may actually work. I can't figure out how much the external SDRAM is drawing, but the MCP SDRAM wants only about 0.5mA. MCP NAND and NOR Flash each only drawn 10uA. I don't know how much WLAN draws. IO_1V8 also feeds STBY_1V2 (aka VDDalive) and Samsung don't specify what current flows on that one. Would be good if someone could measure the current on IO_1V8 during standby. If we can indeed stay within the 1mA budget of MEMLDO, that would be great. > One question. Which one of the low power states mentioned in the manual > do we get into when we suspend ? That would be PMU.Active and CPU.SLEEP > > | That's brings one question to my mind. Why do we need to save the > > | registers that don't "survive" standby (a comment in pcf50633_suspend > > | says so), if we are not going into standby at all ? Please explain. Perhaps you were not the first who found all those different sleep states in different chips confusing ;-) - Werner
