It seems there is only one place to find the documentation for kernel arguments and that's in the repo under,
This gets packaged on debian as linux-doc which will install it under /usr/share/doc and provide a symlink for convenience under
/usr/share/doc/linux-doc You can find it
find -L /usr/share/doc/linux-doc -wholename '*admin-guide/kernel-parameters*' -and -not -path '*translations*'