Hi peter, On 17/06/2014 00:19, Marek Vasut wrote: > On Tuesday, June 17, 2014 at 12:18:55 AM, Marek Vasut wrote: >> On Sunday, June 15, 2014 at 03:11:56 PM, Peter Schumann wrote: >>> This patch makes it possible to boot from battery on olinuxino Boards >>> from Olimex. >>> >>> We should not set DOUBLE_FETS in HW_POWER_MINPWR, it makes my system >>> reset with in seconds while running on battery power. >>> >>> Also mxs_power_enable_4p2() should not be called if running from >>> battery. It switches VDDD and VDDA to LinReg mode and than turns off >>> the VDDIO DCDC supply. At this point the system resets. >>> If we run on battery this is no good idea because the LinRegs are >>> chained behind VDDIO and battery voltage seems not enough to power >>> the system from LinRegs. >>> Also is the power system already running on DCDC after BootROM hands >>> over to u-boot, so no sense in switching back to LinRegs. >>> >>> Signed-off-by: Peter Schumann <peter.schum...@jeepxj.de> >> >> +CC Fabio, I'd like to see his take on this too. > > Reviewed-by: Marek Vasut <ma...@denx.de> > > I'd like to get this merged after 2014.07 though, so it can get some proper > testing. We're too late in the -rc cycle anyway ... >
Agree. Reason is that this change is for all boards, and without a proper testing I will avoid to merge it in the release. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
