I don't know where else to share this so I'm putting this here.
The board recognizes and tries to the load the driver for an AR9462 QCNA222 M.2 WiFi card, but fails. I tried a custom build found on Radxa forum/github, built Armbian myself, and tried an official build. All resulted in the same error. Card was tested and working correctly on 2 different Debian x86 machines.
lspci
0000:00:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd Device 3566 (rev 01)
0000:01:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01)
0002:20:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd Device 3566 (rev 01)
dmesg
ath9k 0000:01:00.0: enabling device (0000 -> 0002)
ath9k 0000:01:00.0: request_irq failed
ath9k: probe of 0000:01:00.0 failed with error -22