[U-Boot-Users] Patches for 85xx question

Hi all, I'd like to submit patches for our project 'atum' (Tuna in Brazilian portuguese, its a custom to name projects after fishes) for inclusion into u-boot. Its a 8548 based board. Should I base patches off of u-boot 1.3.1 , http://opensource.freescale.com/pub/scm/u-boot-85xx.git , or some other git repo?

BTW, thanks for this excellent community and all the help we received so far, Robert