[Nouveau] Syncing to vblank for interlaced video modes

[Alistair Buxton]

Good to see discussion of this issue, it's been plaguing me for ages.

In order to drive my PAL TV I had to patch nouveau to reduce minimum
dot clock, as described here:

http://bugs.freedesktop.org/show_bug.cgi?id=20298

Same is required for nv but not nvidia.

Also, afaik, nv/nouveau does not support interlaced modes at all.

-- 
Alistair Buxton
a.j.buxton at gmail.com