Yes, that's right... Realtek released the code for kernel 3.10/3.18. 8Devices ported kernel 3.18 to Openwrt 18. We ported the SoC for kernel 4.14 forward (5.4/5.10) ... The problem is with drivers. This repository have the drivers for kernel 3.18 (rtl819x for switch and rtl8192cd for wireless). We need to port that to newer kernels... The best would be to create an open driver for them, so we could integrate in openwrt....