"Rob Herring (Arm)" <robh@xxxxxxxxxx> writes: > While OpenFirmware originally allowed walking parent nodes and default > root values for #address-cells and #size-cells, FDT has long required > explicit values. It's been a warning in dtc for the root node since the > beginning (2005) and for any parent node since 2007. Of course, not all > FDT uses dtc, but that should be the majority by far. The various > extracted OF devicetrees I have dating back to the 1990s (various > PowerMac, OLPC, PASemi Nemo) all have explicit root node properties. I have various old device trees that have been given to me over the years, and as far as I can tell they all have these properties (some of them are partial trees so it's hard to be 100% sure). So LGTM. cheers