this issue can probably be because tps65217 simply can't handle too much current through a single pin. If an internal switch AC|USB=SYS get overheated then it can just shutdown to avoid a system damage
2013/11/19 Lei Wang <[email protected]> > The time jumping issue seems to relate to u-boot per Robert Nelson's > suggestion ( > https://groups.google.com/forum/#!category-topic/beagleboard/beaglebone-black/xPxzYyNsA78). > I dropped in a newer u-boot images. It seems to fix the problem. > > For the random reboots, I limited the CPU clock frequency to 500MHz. It > seems that the board is running more robust. So far I didn't see any random > reboot. However I still don't understand why it seems that Angstrom or 3.8 > Android images make the difference. > > Connect SYS_5V and VDD_5V? Since I noticed by connecting the board to a > USB port (i.e. adb) seems to stop the random reboot, I wonder if it has > something to do with VDD_5V and SYS_5V. I will do a little bit more digging > into the schematic. > > For test purpose can I just use a wire to connect SYS_5V and VDD_5V after > boot up? > > Thanks! > > Lei > > > On Tuesday, November 19, 2013 6:38:49 AM UTC-5, Jakub Żymełka wrote: >> >> My BBB is A5C version. We've tested more than 10 pcs BBB and all of it >> has the same problem... >> One, but not very elegant solution is to after start the board, make a >> jumper between pins SYS_5V and VDD_5V, in example with any mosfet >> transistor. >> With this jumper, on kernel 3.2 there was no reset from the time of three >> weeks. >> Anybody have any other solutons? Because this cannot be the final. >> >> Best regards! >> I look forward for suggestions! >> Jakub. >> >> >> W dniu piątek, 8 listopada 2013 05:12:08 UTC+1 użytkownik Lei Wang >> napisał: >>> >>> I have the same problem with BBB running Android. I tested TI prebuilt >>> Android JB4.2 image. We have two versions of BBBs (A5A and A5C). Both of >>> them have the issue. >>> >>> I posted my question on Ti e2e website: http://e2e.ti.com/ >>> support/embedded/android/f/509/p/297726/1049885.aspx#1049885 >>> >>> However it seems that the problem goes away when I load Angstrom image >>> (based on 3.8 kernel). Also if I use Andrew Henderson's Android image >>> (also 3.8), the problem goes away. However we cannot use Andrew's image >>> since there are a lot drivers are missing. >>> >>> I also have the time jump forward problem. The problem goes away when I >>> switch to 3.8 kernel. >>> >>> Jakub, may I ask what version is your BBB? >>> >>> >>> Lei >>> >>> >>> >>> On Wednesday, November 6, 2013 4:11:52 AM UTC-5, Jakub Żymełka wrote: >>>> >>>> There are no hints or any solutions...?? >>>> Please help! >>>> >>>> W dniu środa, 23 października 2013 13:09:00 UTC+2 użytkownik Jakub >>>> Żymełka napisał: >>>>> >>>>> Hello! >>>>> I have a problem. It is based on an involuntary resetting of the >>>>> BBBlack. >>>>> This happens occasionally. About once a day. Totally when you least >>>>> expect it. >>>>> This happens more often on higher frequencies ( 800Mhz, 1Ghz). >>>>> On the console at the time of reset, nothing extra is displayed. No >>>>> error's about kernel panic, sync, segmentation fault or another. >>>>> Just like the same as if I pressed the reset button located on the >>>>> board - but I DIDN'T! >>>>> I'm working on Koenkoi's linux-kernel ti33x-psp-3.2.28-r16c- >>>>> gitr720e07b4c1f687b61b147b31c698cb6816d72f01 + a few changes to run >>>>> on the BBB. >>>>> https://github.com/koenkooi/linux/archive/linux-ti33x-psp-3.2.28-r16c+ >>>>> gitr720e07b4c1f687b61b147b31c698cb6816d72f01.zip >>>>> Kernel is exactly the same as in the Angstrom release. >>>>> I would add, that on the BBW nothing bad happens, everything is >>>>> working properly. >>>>> Anyone has already had a similar situation? >>>>> If it is necessary I can send the kernel patch and configuration file. >>>>> >>>>> Best regards! >>>>> I look forward for suggestions! >>>>> Jakub. >>>>> >>>> -- > 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/groups/opt_out. > -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- 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/groups/opt_out.
