Here are some other resources for the Jetson Dev Kits:
Which Version of L4T is Running – Jetson TX2/JX1/TK1
Determine which version of Linux for Tegra (L4T) is running on your Jetson.
J21 GPIO Header Pinouts – Jetson TX1/TX2
The Jetson TX1 and TX2 share the same carrier board. Here’s some info on the signals on the J21 GPIO Header:
Jetson AGX Xavier Expansion Header
NVIDIA* officially supports several sites and communities oriented towards Tegra and Jetson development. Here are some helpful NVIDIA links:
Jetson Embedded Computing Jetson Embedded Computing Support Page. Latest downloads and reference manual for Jetson Development Kits
Developer Zone – Embedded Systems Nvidia forum for Embedded Systems Development. Good place to ask the hard questions.
Embedded Download Center Contains all of the downloads for everything Jetson such as JetPack, Documentation, TRMs and so much more!
Jetson Embedded Tegra Community Jetson projects, success stories, fails, & discussions.