https://bugs.freedesktop.org/show_bug.cgi?id=52345

--- Comment #7 from Grigori Goronzy <greg at chown.ath.cx> 2012-07-22 21:46:19 
PDT ---
You might have the same problem as me, see
http://lists.freedesktop.org/archives/dri-devel/2012-July/025159.html

First, the engine clock readout seems to be completely bogus on APUs, disregard
it.

Second, the power management functions limit the maximum engine clock to the
default engine clock. On most standalone GPUs, the default clock seems to be
equivalent to the maximum p-state's clock, so that is fine. Not so much on the
APUs!

I'm interested in what the AtomBIOS PowerPlay table looks like on your device.
Can you boot with drm.debug=6 in the kernel command line and tell me what it
says in the log?

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