This document is the one I would have liked to have been able to read when I was trying to figure it all out. Once I thought I had got a reasonable grip on the goings-on in the Device Tree I wrote it all down in the thought that it might clarify things a bit for others.
Thank you very much Nic for this document. Really like it and think it
would be very useful not only for BB users but in general those who
start their adventure with device tree .