djmuted

Sorry for double posting, I found some source code for that EA6521QF WiFi kernel module here: https://github.com/TinkerBoard-Android/rockchip-android-external-wifi_driver in ea6621q directory (version 2.0.240304.e998adb)
I managed to compile it and it works. Place the .bin files in /lib/firmware and place the .ko modules in /lib/modules/4.4.194-rk322x/kernel/net/wireless
Change permissions of all these files to 664 and chown root:root.
Add these lines to the end of /etc/modules
skw_sdio skw_bootcoms skw Run depmod -a and reboot.
These modules were compiled for the legacy kernel, they will not work with anything else (however you should be able to build these modules from source for newer kernels).
Tested on this Armbian build: https://users.armbian.com/jock/web/rk322x/armbian/stable/Armbian_22.02.0-trunk_Rk322x-box_bullseye_legacy_4.4.194_minimal.img.xz
No changes to the device tree are needed. 
EA6521QT_SEEKWAVE_R00005.bin EA6521QF_SEEKWAVE_R00005.bin EA6621Q_SEEKWAVE_R00005.bin EA6621QT_SEEKWAVE_R00005.bin RAM_RW_KERNEL_DRAM.bin ROM_EXEC_KERNEL_IRAM.bin skw_bootcoms.ko skw_sdio.ko skw.ko