Hi Kiano,
Is it working allready?
I too have a Dreambox 7020HD with cable smartcard.
Maybe you figgerd it out allready but you have to alter the Cccam configfile a bit.
Find this bit of lines:
TRY ALL CHIDS : /dev/ttyUSB0
TRY ALL CHIDS : /dev/ttyUSB1
TRY ALL CHIDS : /dev/ttyUSB2
TRY ALL CHIDS : /dev/ttyUSB3
And place direct under it this line:
TRY ALL CHIDS : /dev/sci0
That is all now you only have te stop and restart Cccam and you can watch cable..
Greetings,
Droedels