On Tue, 10 Jul 2012 14:53:40 +0200 Radek Polak <pson...@seznam.cz> wrote:
> On Tuesday, July 10, 2012 01:14:26 PM Dr. H. Nikolaus Schaller wrote: > > > The idea is that there is a mailing list where we (the project > > leading team) propose subtasks needing development > > (e.g. camera driver, bug fixing etc.) and interested > > developers can also make proposals what they could offer. > > I can donate money for project that makes GTA04 spend less mA in suspend. It > would be nice if we could get where Freerunner is now, it would be great to > consume even less. > > My offer is 50EUR for getting GTA04 to consume below 15 mA in suspend, 100EUR > for going below 10mA. If anyone want to look into this, the place to start is 'off_mode'. /sys/kernel/debug/enable_off_mode I think I've tried enabling that before and something didn't work - don't remember the details. Then you need to be sure that the 'off_mode' signalling between CPU and PMIC (the twl4030) is working. There is a output pin on the OMAP which indicates when it is in off_mode (sys_off_mode), and an input pin on the PMIC which handles that signal. When I last looked into this, I concluded that the default polarity of the two pins were different, or maybe one was edge-triggered and the other was level based. Or something. But I might have been wrong. Then you need to set up some power-management scripts in the twl4030 to turn regulators off when in off-mode, and back on again for resume. NeilBrown
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