Options for xorg.conf supported by driver

[Jack Harrington]

G'day,

I'm configuring my xorg.conf to set my dGPU as the main GPU because my 
laptop's fans aren't supported and the GPU fan is really important for 
the thermals. The CPU fan sucks air from the base, and the dGPU fan 
pushes it out the back.

It's an Inspiron 15 7000 which isn't support by i8x as far as I could tell.

So I'm wondering, is there a list of options that nouveau can understand 
from xorg.conf, in particular something to control switcherooctl like 
how nvidia has PrimaryGPU?

I want to try out light gaming with nouveau on the 1050Ti before I mess 
with nvidia again.

Cheers,

Jack Harrington