First of all, thank you so much for this custom build, I've been able to compile the 20220915 version, the only thing that I want to ask is:
Do you've applied the CPU frequency scaling driver for mvebu to your custom build??, if the answer it's no, can be applied at the compiling time without problems? (there is a kernel 5.10 version available at the author's dropbox
EDIT: @solidus1983, the patch that you comment in this post is the same that I've commented?