Phoronix: AMD's "Mystery" Digital Block Supported

For those using motherboards with the AMD RS690 IGP, the DDIA Digital Block is now supported by the RadeonHD (xf86-video-radeonhd) driver. DDIA is the second digital block on this IGP that came as a mystery to both AMD and the RadeonHD developers as they believed no motherboard vendors were actually using this block...

http://www.phoronix.com/vr.php?view=NjQwNg