From looking at Working Realtek SoC RTL8196E 97D 97F in last master, it seems like RTL8197F is actually full MIPS, so there's no major toolchain mods needed as it's not Lexra.
based off of this comment (Working Realtek SoC RTL8196E 97D 97F in last master - #45 by gaspare), I was understanding the primary work that needs to be done is on the switching and wireless drivers