RX6800 - Display working but no FRL

[rcmz]

I have an RX6800 and an LG42C2, I installed the kernel using the AUR package, on Arch Linux.
Display is working, but I'm stuck on 420 8bit in 4K 120hz VRR, as with the stock kernel.
Here is the dcn_regdump. I could not detect my DCN version, so I guessed 3.0.3
dcn_regdump.txt

[nani8ot]

According to the following Reddit post, there's no support for RX 6000 yet.

• Untested DCN generations include DCN 3.1 - DCN 3.6. DCN 3.0 (RX 6000 series) has not been implemented yet, but I believe it should be pretty similar to the newer DCNs.

https://www.reddit.com/r/linux_gaming/comments/1r793et/hdmi_21_frl_looking_for_testers/

Edit: My RX 6700XT is also DCN 3.0 according to dmesg. I can only hope DCN 3.0 will be supported soon(ish) and write a big thank you to the devs in any case.

[ 12.916565] amdgpu 0000:0b:00.0: amdgpu: [drm] Display Core v3.2.351 initialized on DCN 3.0

[ifeign]

Following. Thanks for doing the reg dump, I was thinking about doing so for my RX6400