Linux kernel 5.10 (or 5.4) with Debian Buster

[Brendan Simon (eTRIX)]

I'm currently using Debian Buster on an embedded system (ARM) and am 
currently using an older 4.4 kernel.

I need to upgrade to later version to support a new Ethernet Phy device 
(KSZ9131).

Kernel 4.19 is the default for Buster, but it doesn't seem to have the 
KSZ9131 support.  I have cherry-picked some newer KSZ9131 commits and 
hope that it works.

Just wondering, is it safe to use kernel 5.4 or 5.10 with Debian Buster 
packages?

My preference would be 5.10 (over 5.4), mainly because that is what 
Unstable/Testing is currently using.

Thanks, Brendan.