Control Channel region missmatch

[winterkiter]

Hi there
I found a missmatch between the control channels (5Ghz) that are displayed in the gui and the channels that are actualy supported by the driver for my region
wl -i eth2 chanspecs

nvram get regulation_domain
wl -i eth2 country
Both produce the same output, for me CH, Switzerland.

although i can select for example 40/80 in the gui it is not applied and the router goes back to the default 36/20
wl -i eth2 chanspec 40/80 produces an error (bad channel)

changing my region to Q1
nvram set pci/2/1/ccode=Q1
nvram set wl1_country_code=Q1
nvram set regulation_domain_5G=Q1
nvram set pci/1/1/ccode=Q1
nvram set wl0_country_code=Q1
nvram set regulation_domain=Q1
nvram commit
reboot

-> wl -i eth2 country -> Q1
allows me then to succesfully select the 40/80 channel in the gui or with
wl -i eth2 chanspec 40/80.

I tested an RT-AC66N Router with the most common asus firmware as well as merlin.

I hope i could formulate my the issue clear enough. I found a workaround by setting the country to Q1, however for the future it would be nice to have this solved, does anyone have an idea where to start?
does wl -i eth2 chanspecs communicates with the driver directly (which is closed source ) or is this a part we can modify?

flavio