Yocto linux-6.1-stan-rkr4.1 recipe

I am struggling to write a yocto recipe for radxa’s latest kernel linux-6.1-stan-rkr4.1.
The drivers in the linux-6.1-stan-rkr4.1-buildroot branch are too old for working camera drivers.

Github issue containing implementation specific info: https://github.com/radxa/meta-rockchip/issues/29

Any help/guidance is highly appreciated.