No, prior to uboot overlays, overlays were loaded from the initrd, at best. Also we need to understand that the board file(also an overlay of sorts - but required )is seperate from all this discussion.
I do not understand why you would have "field people" playing around with hardware overlays though. Once your hardware is finalized, it should never change. Which is one small reason why I personally find Universal IO unnecessary for my own purposes. The problem I've seen with explanations, and documentation on device tree, is that no one explains it really well. Additionally, as a new player into device tree overlays. Its not clear where to get information from. See, you need to understand the pin-ctrl subsystem, gpio subsystem . . . list goes one, and on . . .A lot of this information has to be found from the Linux kernel source documentation.HOWEVER, you do not necessarily need to memorize all of this. We ( programmers ) just need a reference that does not goes on, and on for days about silly details we do not need to know to get our jobs done. Nothing like this exists. Anyway, in order to learn, you need to "do". -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORp%3DXhCftd6%3D5CyxbM3oa7wRo4rPpEV28OZ%3DBWUXcDXQXQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
