@foxsquirrel, Thank you for your comment. What I am hearing is that it may be best for us to create a single custom devicetree without overlays in order to adhere to the KISS principle. Is that the correct understanding?
My philosophy thus far has been to avoid customization at all costs to ensure we can simply apt-dist-upgrade to the next big Linux release. I think I am learning that for embedded, this is not a valid philosophy.
Again, thanks for your comments. This forum and this open discussion are extremely valuable. I will be watching your new “Has anyone had any success at working with Device tree for the AI-64” thread to continue to expand my knowledge. Please post how you make out with the TI sysconfig and other tools.