(In reply to comment #40)
> In evergreen_reg.h, /* CRTC blocks at 0x6df0, 0x79f0, 0x105f0, 0x111f0,
> 0x11df0, 0x129f0 */ is not used to define the registers following this
> comment it. It seems to correspond to display controller offsets.
> 
> Is the comment at the wrong place or are the registers not defined with the
> right addresses?

They are correct.  The crtc blocks are repeated at different offsets within the
register aperture.  So if you wanted to access EVERGREEN_CRTC_CONTROL for crtc
0, you access: EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, for
crtc 1:
EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, etc.