Hi Rob. On Thu, May 30, 2024 at 01:50:48PM -0500, Rob Herring (Arm) wrote: > While OpenFirmware originally allowed default values of #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 no idea what exists for Sparc, so disabling the warning for it. > If any other platforms hit the warning, then the warning can be > disabled for them. > > Signed-off-by: Rob Herring (Arm) <robh@xxxxxxxxxx> > --- > Sparc folks, If anyone can dump DTs from some Sparc systems it would be > helpful. For sparc the format looks much different - see: git://git.kernel.org/pub/scm/linux/kernel/git/davem/prtconfs.git This is dumps from the prtconf tool found in Solaris. Looking at for example t1000 it looks like #size-cells, #address-cells are used properly. Looking at the older ss20 I see no use of these. Looking at sb100 (old sparc64 machine) I see inconsistent use. My best guess is that sparc32 machines see little to no use of them. sparc64 use them, but on older machines the usage is inconsistent. Sam
