Pixhawk 2.1

How can I connect Jetson TX2 development kit to Pixhawk 2.1?

There’s a number of computer integrations with the Pixhawk listed on this page:

For example, the Raspberry Pi integration.
It turns out that the Jetson development board has a 40-pin header that has about the same pin-out as the Raspberry Pi, so wiring instructions for serial or I2C communications will likely work for that.
(Other modules, like the Odroids, also have this GPIO header layout.)

As for actually doing processing on the Jetson and sending the commands to the Pixhawk, that’s something you should build on your own!