Is it possible to use an older version of Linux kernel (e.g. 3.x) on Zynq Ultrascale MP SOC?
I'm building source from the xilinx linux kernel repo. The branch with tag xilinx-2016.3 was updated for Linux kernel 4.6, but I'd really prefer to use a 3.x version of the kernel; in particular, the one associated with xilinx-2013.4. The problem I see is that xilinx_zynqmp_defconfig didn't exist in that release package. Should it be possible to copy the xilinx_zynqmp_defconfig from arch/arm64 into the older source tree, or would I need to use an older defconfig: e.g., arch/arm/xilinx_zynq_defconfig? And if I were to use the older defconfig, what sort of degradation of functionality should I expect?