On Sun, Dec 28, 2014 at 10:00 PM, Vagrant Cascadian <vagr...@debian.org> wrote: > On 2014-12-28, Robert Nelson wrote: >> On Sun, Dec 28, 2014 at 6:26 PM, Vagrant Cascadian <vagr...@debian.org> >> wrote: >>> On 2014-12-28, Ian Campbell wrote: >>>> OOI, do you know how broken the white is when booting with the black's >>>> DTB? Completely unusable, missing some minor peripheral or somewhere in >>>> the middle? > ... >> Oh you definitely don't want to run the wrong *.dtb on the black/white.. >> >> In u-boot the findfdt function will correctly set the fdtfile variable. >> >> http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/am335x_evm.h;hb=HEAD#l176 >> >> Notice: >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/arch/arm/boot/dts/am335x-boneblack.dts?id=2ba3549352277514a8e4790adff77a783ee1b9e2 >> >> IMPORTANT: booting the existing am335x-bone.dts will blow up the HDMI >> transceiver after a dozen boots with an uSD card inserted because LDO >> will be at 3.3V instead of 1.8. >> >> Also the 'white' uses DDR2, while the 'black" uses DDR3 > > Ok, so given that it might actually damage hardware to run with the > wrong dtb, I've written up a few UNTESTED patches to support multiple > DTB-Id entries: > > * copy a .dtb file to /boot in addition to the /boot/dtb-${version} > file, named using the ${fdtfile} variable.
While reviewing I noticed one little gottcha.. This is more of a blame squarely at u-boot.. imx targets use: fdt_file http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/wandboard.h;h=809017c5fe225278c87619e237fd0905b9c1dcf1;hb=HEAD#l140 omap targets use: fdtfile Isn't that awesome. ;) Regards, -- Robert Nelson http://www.rcn-ee.com/ -- To UNSUBSCRIBE, email to debian-boot-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/CAOCHtYj4GyvYSKWq=s-c+tpbg-gtd3qdbtgkcrxoqbzmea+...@mail.gmail.com
