Am Mo 4. Mai 2009 schrieb Cédric Berger: > Sorry, my mail was not really clear. > > Rask already answered questions. > But just about usb_limit : > > 2009/5/2 Joerg Reisenweber <jo...@openmoko.org> > > > No you have to push USB_CURLIM to >500mA, if you want >500mA. > > > [... ] > > > > This way I have about 700-750mA pulled from my charger (though it can > > peak > > > to 1A as needed). > > What's the rationale behind that? > > If you set USB_CURLIM to 750mA you get exactly the same behaviour without > > the > > useless "when needed" part. > > > > > As far as I know, 750mA is not an option for usb_curlim. (only 100, 500 and > 1000 I think) > Anyway, bat_curlim allows more precise control. >
Correct - usbdevstat allows 100mA, 500mA, 1A, and suspend (Tbl. 98, MBCC7), anyway... Setting chg_curlim won't help whatsoever, as you can set it only during device powered up and system running, and during this time the system consumption USB-to-SYS will add to the chg_curlim you set. So you exceed intended USB current by setting chg_curlim to the value you intend for USB current, just to shutdown device after that and hope to reach 'correct' USB current then eventually - that's silly. /j
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community