There is a testing kernel-ml package set that is supposed to run on a R-Pi4 system. It is available for download from under the following directory –
https://elrepo.org/people/ajb/devel/kernel-ml/el9/
It has been given a “bcat2” tag for identification purposes (kernel-ml-6.1.0-1.bcat2.el9.elrepo).
When convenient, please test and report your observations.