Hi,
one of the big issue on the device tree will be to update it at
runtime from the bootloader
As example the same board have 2 version with only one difference the
Main Oscilator. So to support it easly without having 2 DT will want
to update the default DT with the proper Osc value from the
bootlaoder.
But as the bootloader will not be able to be udpate in the futur on
production board, we will have to never change to format of the DT
otherwise the bootloder will not be able to work on never kernel.
This is one of issue that nearly all of the PowerPC kernel dev meet
ofen with the couple u-boot + kernel + DT
To avoid this we may use a script to update the DT and then specify
how we get the information from the bootloader. So in this case, the
script we will manage the dependency of the current format version of
the DT.
Best Regards,
J.
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