Thanks Robert! Will try to keep everyone updated on here or reference developments on the "parallel" E2E thread. Regards, jeff
On Friday, March 23, 2018 at 9:40:13 AM UTC-5, RobertCNelson wrote: > > On Fri, Mar 23, 2018 at 9:30 AM, Jeff Andich <[email protected] > <javascript:>> wrote: > > Hey Robert, > > > > The EEPROM is mostly board ID, serial number, and Ethernet MAC addresses > > right? There isn't anything which is DRAM-specific in EEPROM, right? > > > > My understanding is the EEPROM contains the board ID which u-boot-spl > and > > u-boot use to customize the configurations for each specific board... > I > > understand that most of the board-specific changes are contained in the > > board.c file, but I'm wondering if there are other critical > configurations > > in the /arch/arm/mach-omap2 directory. I also added some configurations > for > > our custom board type to the Kconfig in the mach-omap2 directory. This > > looks to be menu options for a makemenuconfig GUI like for the kernel?? > > > > > > Have asked the TI folks on the above-referenced E2E post if there's a > DDR3 > > test tool which can be run for an extended test. > > > > The guy on E2E who's having a similar issue, implied that his firmware > > engineers already tuned the IO Delays. Maybe it's something else?? > > > > I wonder who the people are who actually derive the IO delays (e.g. the > > GDELAY equtions) and tune them for boards like the BB-X15.. How does > that > > process work?? Maybe that's in TI's SPRAC44 ap note.. I still wonder, > how > > do you know when you've hit the sweet spot in terms of the optimum > values?? > > > > This doesn't appear to happen very frequently, but it's probably prudent > to > > get a handle on what makes it crop up.. > > We got our magic numbers directly from TI.. > > Thus, i'm not sure how they were generated... > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/d8260d32-1345-48da-81ff-1f9f51b0494d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
