Kernel L4R28.1 and New Rootfs Jetpack 4.2.2

I develope a driver in l4t28.1,
Can I use a latest rootfs for jp4.2.2 beside the l4t28.1 kernel?

Please introduce the simplest possible solution!!
thank you

I suspect you would have a lot of work ahead of you to use an older kernel on a newer release. The route of least pain is probably to port your driver to the newer kernel.