https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #144 from Bryan Quigley gquigs+bugs@gmail.com --- (In reply to comment #143)
Unfortunately, that disables dynamic engine scaling which on your particular board pretty much disables dpm since the voltage and mclk are static :(
Well damn.. Any other things to try? (I think I've exhausted all the other places to put return 0; in the discussed functions)