How complete should the DTS be?

[Sean MacLennan]

Just a general question about DTS "completeness". Like all 440EP 
processors, the taco has two i2c buses. However, only one bus has 
anything connected to it.

Should I show both bus entries in the DTS, or only the one that is used? 
I have generally only been showing the devices that are present. i.e. 
Only one emac, only one serial port.

Is there a convention for this?

Cheers,
   Sean