[U-Boot] Structure of directory nand_spl/board

Hi,

in the directory nand_spl/board one can find three subdirectories: amcc, freescale and samsung, which contain the reference boards of these vendors. These vendors are CPU vendors, too.

When I want to add a new board, shall I create a board's vendor directory directly in nand_spl/board, or shall I create the board directory dependent on the used CPU within one of the three existing directories? What's the intended structure?

Additional question regarding the /board directory in the top dir: May new boards still go into /board or is a /board/<vendor> directory now mandatory?

Thanks and kind regards, Jens