040000 tree f454f6af36943997c5be7140a54b19900f87d6bb	android
040000 tree 791e4d923ca13eda984cffc50a0e59d0beb49150	linux
040000 tree c1e8a8a80236f2574e09b85352dcb0651de6c04d	openiotsdk
040000 tree 3f9223f849ff9f875b32f6f4a16fa73afecc4f07	tv-common