040000 tree 6419bf8791de7e30a307699c3e9cddac7f35a897	android
040000 tree c01f943f76ea9f8d6bc3ddd1c11f467db9b8c6de	linux
040000 tree c1e8a8a80236f2574e09b85352dcb0651de6c04d	openiotsdk
040000 tree c19133a69bafdcf2bb8f206ec0354d0276b3fd9d	tv-common