From: Robert Nelson <robertcnel...@gmail.com> Reply-To: <beagleboard@googlegroups.com> Date: Wednesday, February 12, 2014 at 10:56 AM To: Beagle Board <beagleboard@googlegroups.com> Subject: Re: [beagleboard] Kernel/device tree road-map for the BBB
> > > > On Wed, Feb 12, 2014 at 12:32 PM, David Lambert <d...@lambsys.com> wrote: >> I am contemplating moving from 3.8.x to 3.13.x kernels due to the apparent >> improvement in USB support. I am confused, however, as to the state of device >> trees/overlays and their relationship with capes. >> >> It appears to me that 3.8.x kernels use device tree overlays managed by an >> internal kernel cape manager, whereas 3.13.x kernels handle capes using >> Robert Nelson's "Really Simple Cape Manager" to patch and recompile the base >> BBB device tree. >> >> My questions are: >> >> a) Are the above assumptions correct? >> b) Will the 3.8.x cape manager be ported to 3.13.x kernel or is RCN's rscm >> here to stay. > > sadly, it only works for 'simple' things. > >> c) Any other pointers? > > I might have some free time this weekend.. > > The path i'm going to start heading for v3.13.x/v3.14.x is just to do separate > major cape dtb's.. > > So in u-boot: fdtbase=am335x-bone or am335x-boneblack > > cape=xzy (defined in uEnv.txt (lcd4-a1/etc)) > > Then it'll just load: > $fdtbase-$cape.dtb > > on bootup.. I vote to keep things simple. Since there is no way to add or remove capes with the power on and since the hardware configuration rarely changes, why have an auto discoverable cape solution. Simply edit the uEnv.txt to add or remove cape settings is the best solution. Regards, John > > Regards, > > -- > Robert Nelson > http://www.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 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. 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.
