device_board_hihope
The rk3568 directory is is dual licensed: you can use it either under the terms of the GPL V2 or the Apache License, Version 2.0., at your option.
The rk3568/wifi is licensed under the GPL V2 License.
The others subdirectories in wifi directory are licensed under Apache License, Version 2.0.
The hcs,neptune100,picture,shields and others directories are licensed under Apache License, Version 2.0.

(1) The directories below are licensed under Apache License, Version 2.0.
./dayu210/bootanimation
./dayu210/camera
./dayu210/cfg
./dayu210/distributedhardware
./dayu210/kernel
./dayu210/startup
./dayu210/uboot
./dayu210/updater

(2) The directories below are licensed under GNU General Public License, version 2.
./dayu210/audio_drivers

As for the specific use of the licenses,  please refer to the relevant description in the documents.