The root cause was
from
ddrparam set TrainInfo 0xC8 #0x05 = Detailed debug (e.g. eys delays)
to
ddrparam set TrainInfo 0x05 #0x05 = Detailed debug (e.g. eys delays)
and generated the lpddr4_timing.c, place it into BSP and rebuild the image. However the image caused the error happened.
May i know why cannot change it ?