i have check the board.c ddr.c ddr_defs.h servel times, i think the ddr reference will not be configurate wrong except the description as aboves.
maybe there have some other code need to be modified because even the ddr reference configuration is wrong,when power up, the debug uart0 will output like belows:
U-Boot SPL 2013.01 (Sep 24 2014 - 21:58:36)
Texas Instruments Revision detection unimplemented
so ,i don't know how to do?