L4T R32.2.0 Notes - OE4T/meta-tegra GitHub Wiki

As of 18 Aug 2019, the master and warrior-l4t-r32.2 branches support L4T R32.2.0/JetPack 4.2.1 content for Jetson TX1, Jetson TX2, Jetson Nano, and Jetson AGX Xavier.

Please Note

The JetPack 4.2.1 content cannot be downloaded anonymously from NVIDIA's servers. You must use NVIDIA SDK Manager to download the JetPack 4.2.1 Debian packages to your build host, then add this setting to your build configuration (e.g., in conf/local.conf under your build directory):

NVIDIA_DEVNET_MIRROR = "file://path/to/downloads"

By default, the SDK Manager downloads to a directory called Downloads/nvidia/sdkm_downloads under your $HOME directory, so use that path in the above setting.

If you are building TensorRT for Jetson AGX Xavier, you must create a subdirectory called P2888 under your ${NVIDIA_DEVNET_MIRROR} directory and copy the Xavier-specific tensorrt deb files there. The TensorRT deb files for Jetson TX1/TX2 should remain in the main ${NVIDIA_DEVNET_MIRROR} directory. NVIDIA uses the exact same names for the two sets of deb packages, even though the content for Xavier is different from the other platforms.

If you ran the SDK Manager on Ubuntu 16.04 to download the JetPack packages, you should add the following setting to your build configuration:

CUDA_BINARIES_NATIVE = "cuda-binaries-ubuntu1604-native"

By default, the recipes assume you used Ubuntu 18.04 and reference that version of the CUDA host-side tools.

The L4T BSP files (driver package, sources for gstreamer plugins, etc.) are accessible without a DevNet account, so if your builds only require the BSP, you don't have to go through these extra steps.