* Zybo-Z7
* DT overlay can be used in zybo series
* 
```BASH
dewei@lab521-amd-1 ~/Documents/xvc/xvc-zybo-z7/build/build_kernel/kernel_src [10:49:09]
> $ cat .config | grep overlay -i [±master ✓]
CONFIG_OF_OVERLAY=y
# CONFIG_OVERLAY_FS is not set
```
* For newer Linux version(>6), DT overlay default on