I’m wondering about the 6Ghz WI-FI 6E access point on Jetson Nano 4Gb with latest 4.9 official kernel release. I found several devices (list below), but I’m stuck with their connection to Jetson because of the ancient kernel version, all drivers start to work from 5+. I found some info about the backports of their drivers, but I’m not sure if they will work properly. Also I was thinking about kernel upstream by Fedora/Openwrt installation, but I couldn’t find any info on whether Nvidia drivers (that included in l4t) will there and work properly. Also I saw that maybe there is a possibility to install L4T for Orin Nano, but I’m also not sure about it workability.
I can’t answer about backporting. The Nano you are speaking of though is the first Jetson of that form factor, so it is a TX1 SoC. Then there is that form factor for TX2, then Xavier, and then Orin (from oldest to newest). TX1 was the very first 64-bit ARM. It wasn’t until TX2 that things started maturing, but both TX1 and TX2 software reached end of new feature development long ago. You’d have to get to the Xavier series to run a 5.x kernel, at least by default (no backporting needed). There is an Xavier Nano (and NX and AGX) which would probably have a recent enough kernel, but even then you’d want to check the specific kernel version since it isn’t all 5.x Linux kernels.
I know changing hardware is not what you wanted, but porting can get complicated. For reference, L4T is what actually gets flashed, and this is just Ubuntu plus NVIDIA drivers. It is at L4T R35.x that you’d probably get what you want. Here’s the URL for the matrix of L4T releases and hardware which works with that (including documentation on the specific kernel): https://developer.nvidia.com/linux-tegra