Comment 2 for bug 2021962

The device trees comes directly from the Xilinx kernel (https://github.com/Xilinx/linux-xlnx) . It seems like in the focal kernel the overlay for the KV260 SOM did not set a compatible string so the it fell back to the compatible string defined by the baseboard (zynqmp-smk-k26-revA.dts) . When a device tree for rev B of the board was added the compatible string was added to the rev A device tree as well.

The change was added here:
https://github.com/Xilinx/linux-xlnx/commit/70604467dc949d3b77eabaa1288365cb25b2ec23#diff-f19b970e083cc67c8063c7698b0bb6554d69d43190d355adc20945526eda5831

I agree with Masahiro that Jammy is correct. Since the device trees are not in the kernel build and are provided by Xilinx I don't think this is something we can backport to Focal.