https://bugzilla.kernel.org/show_bug.cgi?id=60709
--- Comment #7 from Rafał Miłecki zajec5@gmail.com --- Whoops, your avivotool is too old to support "hdmi" (or you mispelled it). Could you update avivotool, please?
After updating I'll need output of "avivotool regs hdmi" from 3.9 and 3.10, both using radeon.audio=1.