On Sun, 2014-12-28 at 23:02 -0600, Robert Nelson wrote: > 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. ;)
According to u-boot's README imx is in the wrong here, since only fdtfile is documented. I think f-k should follow that lead and only worry about fdtfile, at least until we have a concrete reason to worry about the imx one. Ian. -- 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/1419858835.13595.66.ca...@debian.org
