Can of of you guys start a table/spreadsheet about board and SoC revisions and when we think it is broken and when it works?
I emailed the BB project lead and he didn't know anything off hand but suggested subscribing to beaglebo...@googlegroups.com and asking there. Someone there may actually have an answer. --joel On 9/17/2015 2:05 PM, Marcos Díaz wrote:
Ragu, I would like you to confirm which revision you have, for this I printed the following registers in the BBB: 0x44E10600 and 0x44E10604 The first will print something like: 1b94402e for BBB rev A5C (XAM3359AZCZ100) ( 1b means rev.A of the microcontroller) 2b94402e for BBB rev C (AM3358BZCZ100) (2b means rev B of the microcontroller) The second register will print something like: 20ff0383 for A5c (this means that this is AM3359) 20fd0383 for C (this means it is an AM3358). Please let me know which are this values in your Board. Thanks! On Thu, Sep 17, 2015 at 11:44 AM, Marcos Díaz <marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com>> wrote: Yes, sorry about that, There are two registers we can check to see the different revision numbers. I will check it myself once i confirm that the different revisions are the problem (i'm not sure because of what Ragu said). Thanks! On Thu, Sep 17, 2015 at 11:12 AM, Joel Sherrill <joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com>> wrote: On 9/17/2015 8:43 AM, Marcos Díaz wrote: Yes, in my case the older (that doesn't work) revision is a XAM3359AZCZ100 And the rev C (that works well with cache) is AM3358BZCZ100 Can we determine that in software? On Thu, Sep 17, 2015 at 10:32 AM, Joel Sherrill <joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com> <mailto:joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com>>> wrote: On September 17, 2015 8:26:41 AM CDT, "Marcos Díaz" <marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com> <mailto:marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com>>> wrote: >Hi, > >How did you see the revision number? if you are using u-boot you can >pause the start and write printenv and enter to see that: > > >board=am335x >board_name=A335BNLT >board_rev=00C0 > > >This is in my version. > >Please tell me so I can check if is the revision, or perhaps is >something else in u-boot initialization. > > >For the question Joel asked there is a way: > >http://dumb-looks-free.blogspot.com.ar/2014/05/beaglebone-black-bbb-revision-serial.html > >apparently, in the eeprom thorugh i2c it is recorded. But first we must >confirm that is a problem from the revisions, since Ragu has the >problem in a rev C. Does the SoC itself have a revision number we can read? It may be that newer boards have a newer CPU. >Greetings > > >On Wed, Sep 16, 2015 at 7:22 PM, Joel Sherrill ><joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com> <mailto:joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com>>> wrote: > > > >On 9/16/2015 2:41 PM, ragu nath wrote: > >Hi Marcos, > >Great news! I did not find any solution to the issue. I have a REV C >board from element14. Is this the same board you are using? In my >board I saw the issue. > >Does this have anything to do with the patch you submitted [PATCH] >Beaglebone: fix missing clobber in inline assembly. >https://lists.rtems.org/pipermail/devel/2015-September/012531.html >I have not yet tested with this patch. > >The freebsd driver is working with cache disabled. If possible pls >check if it is working with cache enabled in your board. > > >If this is a board revision related issue, is there a way >programmatically to >know which revision the board is? That way the BSP could auto-detect >the right >thing to do. Otherwise, we may be looking at a BSP variant or a build >option. >I would rather avoid those if we can auto-detect. > >--joel > > >Thanks, >Ragunath > > >On Mon, Sep 14, 2015 at 7:22 PM, Marcos Díaz ><marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com> <mailto:marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com>> ><mailto:marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com> <mailto:marcos.d...@tallertechnologies.com <mailto:marcos.d...@tallertechnologies.com>>>> wrote: > > Hi Ragu, >I wanted to know if you were able to see something else about the >problem we had in the BBB when using LWIP and enabling cache ( the >program freezes). >I can tell you that here we were using BBB rev. A5C and had this >problem, but now we could test this with a BBB Rev C, and it >successfully works with cache enabled (using the same sdcard in both >boards, one works and the other doesn't). > Greetings > > -- > > ______________________________ > > <http://www.tallertechnologies.com> > > * > * > > Marcos Díaz > > Software Engineer > > * > * > > San Lorenzo 47, 3rd Floor, Office 5 > > Córdoba, Argentina > > * > * > > Phone:+54 351 4217888 / +54 351 4218211/ +54 351 7617452 > > Skype:markdiaz22 > > > > > >-- >ragu > > >-- >Joel Sherrill, Ph.D. Director of Research & Development >joel.sherr...@oarcorp.com On-Line Applications Research >Ask me about RTEMS: a free RTOS Huntsville AL 35805 >Support Available (256) 722-9985 > > > > >-- > >______________________________ > > > > >Marcos Díaz > >Software Engineer > > >San Lorenzo 47, 3rd Floor, Office 5 > >Córdoba, Argentina > > >Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452 > >Skype: markdiaz22 --joel -- ______________________________ <http://www.tallertechnologies.com> * * Marcos Díaz Software Engineer * * San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina * * Phone:+54 351 4217888 / +54 351 4218211/ +54 351 7617452 Skype:markdiaz22 -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985 -- ______________________________ <http://www.tallertechnologies.com> * * Marcos Díaz Software Engineer * * San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina * * Phone:+54 351 4217888 / +54 351 4218211/ +54 351 7617452 Skype:markdiaz22 -- ______________________________ <http://www.tallertechnologies.com> * * Marcos Díaz Software Engineer * * San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina * * Phone:+54 351 4217888 / +54 351 4218211/ +54 351 7617452 Skype:markdiaz22
-- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
