While 5.4.y is not in ( sunxi64_common.inc ) current yet, at this time of writing I like to explore " KERNELBRANCH="branch:orange-pi-5.5" ".
Except for just updating to this branch, I noticed it is just too early as megous github branch is not prepared yet for 5.5-RC1.
I am curious to see if any of these have been applied already and what new fun stuff needs to be considered in the kernel .config