Hi Fohnbit, Keyed entry just means that u-boot will be looking for a specific stop character instead of "any key". Details for the changes are here <http://andicelabs.com/2014/07/beaglebone-black-boot-issues/> with a link to RCN's instructions & patches for building u-boot.
-Ron On Sunday, November 15, 2015 at 11:43:44 PM UTC-6, Fohnbit wrote: > > Hello Ron, > > what did you mean with "keyed entry"? > > Maybe you have a link or a instruction for this? > > Thank you! > > Am Freitag, 13. November 2015 16:29:59 UTC+1 schrieb Ron B.: >> >> You definitely need a supply that can generate enough current to have a >> decent ramp-up of 5V or the PMIC gets angry. But, there's also the issue >> of u-boot stopping if it sees a "phantom character" from the UART. So, if >> you need high reliability start-up you should rebuild u-boot for "keyed >> entry" as well. >> >> -Ron >> >> >> On Tuesday, November 10, 2015 at 1:29:40 PM UTC-6, Fohnbit wrote: >>> >>> I forgot: >>> >>> I power up the power supply ... So not only connected the BBB on the >>> Running power supply. >>> >>> Trank you >>> >>> Am Dienstag, 10. November 2015 18:58:40 UTC+1 schrieb Wulf Man: >>> > rise time spec >>> > >>> > 1000ms setup 50ms rise time >>> > >>> > maybe gerald can give his thumbs up on that spec >>> > >>> > >>> > >>> > seems fast enough can you put a scope on it to be sure ? >>> > >>> > maybe the power supply is out of spec some of the time >>> > >>> > >>> > >>> > i have been using a cheap 5 dollar chinese supply for 2 years >>> with >>> > no issues >>> > >>> > >>> > >>> > On 11/10/2015 10:30 AM, Fohnbit wrote: >>> > >>> > >>> > >>> > >>> > Hello, >>> > >>> > >>> > >>> > I use this: >>> > >>> > http://www.meanwell.com/webapp/product/search.aspx?prod=dr-15 >>> > >>> > >>> > >>> > DR-15-5 >>> > >>> > >>> > >>> > Am Montag, 9. November 2015 16:23:14 UTC+1 schrieb Wulf Man: >>> > >>> > >>> > >>> > >>> > As posted here a few times. >>> > >>> > If your power supply does not have a fast enough rise >>> time >>> > getting up to voltage >>> > >>> > your BBB will not boot reliable. >>> > >>> > You have not said what specs your power supply is or >>> where >>> > you got it from. >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > On 11/9/2015 8:02 AM, Fohnbit wrote: >>> > >>> > >>> > >>> > >>> > Hello! >>> > >>> > >>> > >>> > Sometimes my BBB Rev C dont boot, when I connect the >>> 5V. >>> > >>> > The Power LED is on but the 4 USR LED are off. >>> > >>> > >>> > >>> > This happen not really often ... So I have no debug >>> > information. >>> > >>> > >>> > >>> > But maybe someone has the same problem and know where >>> > the problem is? >>> > >>> > >>> > >>> > Thank you! >>> > >>> > >>> > -- >>> > >>> > For more options, visit http://beagleboard.org/discuss >>> > >>> > --- >>> > >>> > You received this message because you are subscribed to >>> > the Google Groups "BeagleBoard" group. >>> > >>> > To unsubscribe from this group and stop receiving emails >>> > from it, send an email to >>> [email protected]. >>> > >>> > For more options, visit >>> https://groups.google.com/d/optout. >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > -- >>> > >>> > For more options, visit http://beagleboard.org/discuss >>> > >>> > --- >>> > >>> > You received this message because you are subscribed to the >>> Google >>> > Groups "BeagleBoard" group. >>> > >>> > To unsubscribe from this group and stop receiving emails from >>> it, >>> > send an email to [email protected]. >>> > >>> > For more options, visit https://groups.google.com/d/optout. >>> >>> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
