[U-Boot] Setting board revision and serial with device tree

[U-Boot] Setting board revision and serial with device tree

[Lars Poeschel]

Hello!

I want to set the board serial number and revision for linux /proc/cpuinfo . 
On an arm board it seems arch/arm/lib/bootm.c function boot_prep_linux() is 
responsible. On a non fdt booting board I can enable CONFIG_REVISION_TAG and 
CONFIG_SERIAL_TAG in the board config and implement get_board_rev() and 
get_board_serial() in the board files. The information is then passed to the 
linux kernel using ATAGS structure. This does not work, if the board boots 
with device tree.
How can a similar thing be done with device tree booting arm board ? I don't 
find information about this. Can somebody please point me to some documentation 
or relevant locations in code, where this is done ?

Thanks a lot,
Lars