That is not what it was for. It was to prevent a premature loss of reset during power up.
Gerald On Fri, Nov 22, 2013 at 12:18 AM, rod calabio <rodcala...@gmail.com> wrote: > There was a note on Beaglebone Black that the newest version BBB version > 6 has or'd the reset button and the power button to prevent a reset, now > whether or not it is the same problem > as posted originally, ho knows. But I had the same issue where I was > ssh'd into the BBB for several hours and then it just stopped for no reason. > > > On Thursday, November 21, 2013 6:56:09 AM UTC-8, lisarden wrote: > >> Hey guys! >> >> I'm pretty sure that this mail-list is also read by people who are >> invloved into kernel development and they may be aware of why 3.8 does not >> reboot and 3.2 (TI) reboots the BBB. Are they here and can surmise where >> the issue is? >> >> >> 2013/11/20 Maxim Podbereznyy <lisa...@gmail.com> >> >>> Ldo3 and ldo4 are not used to power any of really current- hungry unit >>> like the ddr3 or the cpu core. >>> 20 нояб. 2013 г. 13:23 пользователь "Jakub Żymełka" <zymelk...@gmail.com> >>> написал: >>> >>> On the TI product page >>> http://www.ti.com/product/tps65217B#feature<http://www.google.com/url?q=http%3A%2F%2Fwww.ti.com%2Fproduct%2Ftps65217B%23feature&sa=D&sntz=1&usg=AFQjCNHLbRM9BBCxhK0SOnLAnQJojRBVHA> >>> is >>>> the information about current limit: >>>> >>>> "Two Independent Load Switches That Can Be Configured as LDOs >>>> Configured as LDOs: >>>> - LDO Output Voltage Range: 1.5 V – 3.3 V >>>> - VIN Range: 2.7 V – 5.8 V >>>> *- 200-mA Current Limit (TPS65217A, B)* >>>> *- 400-mA Current Limit (TPS65217C, D)"* >>>> >>>> Or maybe i'm wrong? >>>> >>>> >>>> W dniu środa, 20 listopada 2013 10:03:54 UTC+1 użytkownik lisarden >>>> napisał: >>>>> >>>>> Can you prove it? You mean it can supply more current? :) >>>>> > But tps65217C (in BBB) has a more power availability vs. tps65217B >>>>> (in BBW). >>>>> >>>>> >>>>> >>>>> 2013/11/20 Jakub Żymełka <zymelk...@gmail.com> >>>>> >>>>>> Ok, I see. >>>>>> But tps65217C (in BBB) has a more power availability vs. tps65217B >>>>>> (in BBW). >>>>>> Reducing the CPU speed is not the solution. For example I would like >>>>>> to work with a clock speed of 1GHz. >>>>>> >>>>>> So, are You suggesting that the PMIC is incorrect? >>>>>> Can anyone else give an opinion? Maybe the designers of the new BBB? >>>>>> >>>>>> Best regards, >>>>>> Jakub. >>>>>> >>>>>> >>>>>> W dniu środa, 20 listopada 2013 08:42:18 UTC+1 użytkownik lisarden >>>>>> napisał: >>>>>>> >>>>>>> Jakub, answering to your question: >>>>>>> tps65217b is not tps65217b (bbb) >>>>>>> Bbw 600mhz vs bbb 1000mhz >>>>>>> Ddr2 pwr consumption != ddr3 >>>>>>> >>>>>>> That is why when people reduce the cpu freq systems become stable, >>>>>>> but I don't think it can help because I run my board in cpu ondemand >>>>>>> governor and it still reboots. However when running ezsdk my system >>>>>>> seems >>>>>>> to be stable while on Ubuntu it reboots randomly >>>>>>> 20 нояб. 2013 г. 10:53 пользователь "Jakub Żymełka" < >>>>>>> zymelk...@gmail.com> написал: >>>>>>> >>>>>>> Lei Wang, >>>>>>>> yes, You can just use a wire to connect SYS_5V and VDD_5V after >>>>>>>> boot up. >>>>>>>> We've done this before we choose the option with the transistor. >>>>>>>> >>>>>>>> We are working on the 04.2013 U-boot, so we will try the newest >>>>>>>> version 10.2013 and I will let you know about my results. >>>>>>>> >>>>>>>> lisarden, >>>>>>>> According to you, the power management unit ( tps65217 ) in the >>>>>>>> BBB is not able to provide enough power by single pin? >>>>>>>> So why in the BBWhite or with the 3.8 kernel is no any random >>>>>>>> reboot? The PMIC is exactly the same... >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> W dniu wtorek, 19 listopada 2013 20:05:34 UTC+1 użytkownik lisarden >>>>>>>> napisał: >>>>>>>>> >>>>>>>>> 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 <lei...@gmail.com> >>>>>>>>> >>>>>>>>>> The time jumping issue seems to relate to u-boot per Robert >>>>>>>>>> Nelson's suggestion (https://groups.google.com/for >>>>>>>>>> um/#!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/sup >>>>>>>>>>>> port/embedded/android/f/509/p/297726/1049885.aspx#1049885<http://www.google.com/url?q=http%3A%2F%2Fe2e.ti.com%2Fsupport%2Fembedded%2Fandroid%2Ff%2F509%2Fp%2F297726%2F1049885.aspx%231049885&sa=D&sntz=1&usg=AFQjCNHi1SsOZgxRVM8W2MqzjKJrfNmu0A> >>>>>>>>>>>> >>>>>>>>>>>> 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<https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2Fkoenkooi%2Flinux%2Farchive%2Flinux-ti33x-psp-3.2.28-r16c%2Bgitr720e07b4c1f687b61b147b31c698cb6816d72f01.zip&sa=D&sntz=1&usg=AFQjCNF7TTdwvsG9LEKU3mvETE6oHuItGw> >>>>>>>>>>>>>> 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<http://www.google.com/url?q=http%3A%2F%2Fbeagleboard.org%2Fdiscuss&sa=D&sntz=1&usg=AFQjCNEpMSpbklk_hXqEMMJhBr1sf-iMfQ> >>>>>>>>>> --- >>>>>>>>>> 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 beagleboard...@googlegroups.com. >>>>>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> LinkedIn - >>>>>>>>> http://www.linkedin.com/in/maximpodbereznyy<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fin%2Fmaximpodbereznyy&sa=D&sntz=1&usg=AFQjCNGbXkH1q_kF7SibFgJWGaVATIg8IQ> >>>>>>>>> Company - >>>>>>>>> http://www.linkedin.com/company/mentorel<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmentorel&sa=D&sntz=1&usg=AFQjCNEgVLBex76Upy8S1chcAjPl0gGwHQ> >>>>>>>>> Facebook - >>>>>>>>> https://www.facebook.com/mentorel.company<https://www.google.com/url?q=https%3A%2F%2Fwww.facebook.com%2Fmentorel.company&sa=D&sntz=1&usg=AFQjCNFs5RUpilUSlX-6V7JeOaXroaG1Wg> >>>>>>>>> >>>>>>>> -- >>>>>>>> For more options, visit >>>>>>>> http://beagleboard.org/discuss<http://www.google.com/url?q=http%3A%2F%2Fbeagleboard.org%2Fdiscuss&sa=D&sntz=1&usg=AFQjCNEpMSpbklk_hXqEMMJhBr1sf-iMfQ> >>>>>>>> --- >>>>>>>> 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 beagleboard...@googlegroups.com. >>>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>>> >>>>>>> -- >>>>>> For more options, visit >>>>>> http://beagleboard.org/discuss<http://www.google.com/url?q=http%3A%2F%2Fbeagleboard.org%2Fdiscuss&sa=D&sntz=1&usg=AFQjCNEpMSpbklk_hXqEMMJhBr1sf-iMfQ> >>>>>> --- >>>>>> 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 beagleboard...@googlegroups.com. >>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> LinkedIn - >>>>> http://www.linkedin.com/in/maximpodbereznyy<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fin%2Fmaximpodbereznyy&sa=D&sntz=1&usg=AFQjCNGbXkH1q_kF7SibFgJWGaVATIg8IQ> >>>>> Company - >>>>> http://www.linkedin.com/company/mentorel<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmentorel&sa=D&sntz=1&usg=AFQjCNEgVLBex76Upy8S1chcAjPl0gGwHQ> >>>>> Facebook - >>>>> https://www.facebook.com/mentorel.company<https://www.google.com/url?q=https%3A%2F%2Fwww.facebook.com%2Fmentorel.company&sa=D&sntz=1&usg=AFQjCNFs5RUpilUSlX-6V7JeOaXroaG1Wg> >>>>> >>>> -- >>>> For more options, visit >>>> http://beagleboard.org/discuss<http://www.google.com/url?q=http%3A%2F%2Fbeagleboard.org%2Fdiscuss&sa=D&sntz=1&usg=AFQjCNEpMSpbklk_hXqEMMJhBr1sf-iMfQ> >>>> --- >>>> 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 beagleboard...@googlegroups.com. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >> >> >> -- >> LinkedIn - >> http://www.linkedin.com/in/maximpodbereznyy<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fin%2Fmaximpodbereznyy&sa=D&sntz=1&usg=AFQjCNGbXkH1q_kF7SibFgJWGaVATIg8IQ> >> Company - >> http://www.linkedin.com/company/mentorel<http://www.google.com/url?q=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmentorel&sa=D&sntz=1&usg=AFQjCNEgVLBex76Upy8S1chcAjPl0gGwHQ> >> Facebook - >> https://www.facebook.com/mentorel.company<https://www.google.com/url?q=https%3A%2F%2Fwww.facebook.com%2Fmentorel.company&sa=D&sntz=1&usg=AFQjCNFs5RUpilUSlX-6V7JeOaXroaG1Wg> >> > -- > 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 beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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