040000 tree 178bf1e63d8269df1e4edd1f3502138407c871e7	android
040000 tree c01f943f76ea9f8d6bc3ddd1c11f467db9b8c6de	linux
040000 tree c1e8a8a80236f2574e09b85352dcb0651de6c04d	openiotsdk
040000 tree 457571320f8f09a82fafdf9ab7a838f814bf125f	tv-common