Add DTBO file in JP 5.1.2

Can only find guides and howtos related to modifying /boot/extlinux.conf, but there is no such file on my xavier nx once flashed. for info I am not working from the sdkmanager but building a Yocto image based on meta-tegra. is this related to JP now flashing an EFI image rather than a cboot based one?

If you are talking about jetpack5, then there is no Cboot. Directly using UEFI.

And it is not /boot/extlinux.conf. It is /boot/extlinux/extlinux.conf

Indeed, have to replace a dtbo file and it’s proving to be a nightmare. Any clue greatly appreciated as yocto don’t deal with binary patches so the usual

devtool extract
git commit
git format-patch

Will not work

So not sure how to replace the content of that dtbo

The dtbo on a rel-35 device won’t take effect by using extlinux.conf.

Dtbo is put inside the board config as field “OVERLAY_DTB_FILE=” and got updated by flashing.

Please see add dtbo file to xavier nx kirkstone branch (efi boot) · OE4T/meta-tegra · Discussion #1635 · GitHub for a more complete description of the entire issue.

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.