Thanks Robert for providing these instructions. Does anyone know if there are any changes required since they were posted in 2016? I was able to build the linux image as described, but after installing it onto the BBB using dpkg the board no longer boots. Instead, it hangs immediately on power-up with all 4 LEDs on.
Any ideas for things to try would be greatly appreciated. Thank you Chris On Wednesday, November 23, 2016 at 6:49:54 AM UTC-8, RobertCNelson wrote: > > On Wed, Nov 23, 2016 at 8:34 AM, Jim S <[email protected] <javascript:>> > wrote: > > Apparently, from a little searching and reading others are having > similar > > trouble and the issue is DMA for the USB audio - it needs to be disabled > (I > > think...). This requires recompiling the kernel with this disabled. > > Haven't compiled a kernel before so am looking for some detailed > > instructions on this and replacing the existing kernel (would like to > keep > > the rest of the configured system if possible). Anyone have any good > links > > on doing this? I have found several places that give the line setting > the > > option of disabling DMA and I think I could add that to detailed kernel > > cross compiling instructions... > > git clone https://github.com/RobertCNelson/yakbuild > cd yakbuild/ > cp recipe.sh.sample recipe.sh > > Open receipe.sh and set: > > toolchain="gcc_linaro_gnueabihf_4_8" > & > kernel_tag="3.14.37-ti-r57" > > Then run: > > ./build_deb.sh > > once Kernel Configuration loads: > > Device Drivers ---> > [*] USB support ---> > MUSB DMA mode (TI CPPI 4.1 (AM335x)) ---> > > You'll see: > │ │ ( ) Inventra > │ │ > │ │ (X) TI CPPI 4.1 (AM335x) > │ │ > │ │ ( ) Disable DMA (always use PIO) > > Change too: > > │ │ ( ) Inventra > │ │ > │ │ ( ) TI CPPI 4.1 (AM335x) > │ │ > │ │ (X) Disable DMA (always use PIO) > > Exit via esc and < Yes > to save your new configuration.. > > Let it build, (ignorly all the libfakeroot-sysv.so errors) > > eventually you'll have a linux-image-*deb package under deploy, copy > this to your beagle and run "sudo dpkg -i linux-image*.deb" and reboot > > 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/c73dd6df-2add-4acb-b337-de50a63a2fa6%40googlegroups.com.
