just connected to serial console and this is what i get:
U-Boot 2012.07-21984-gd7d026f [local,local] (Apr 15 2015 - 10:49:55)
U-boot 2012.07 dni1 V0.9 for DNI HW ID: 29764958 NOR flash 0MB NAND flash 128MB RAM 256MB 1st Radio 4x4 2nd Radio 4x4 + xDSL
smem ram ptable found: ver: 0 len: 5
DRAM: 235 MiB
If i change the dts-file my d7800 doesn't start.