Debian is now working on the NVIDIA Jetson TX1 developer kit, a development board based on the Tegra X1 chip (Tegra 210), a 64-bit ARM chip.
We have a pre-built u-boot image in Debian as well as kernel and installer support. There are some minor kernel glitches but NVIDIA is very active upstream and I hope they'll get resolved soon.
The Jetson TX1 developer kit makes a pretty good 64-bit ARM development platform. The board is supported in mainline u-boot and the mainline kernel and NVIDIA are pretty responsive to bug reports. Unfortunately, a proprietary blob is required for USB (and Ethernet is connected via USB).
If you're interested in a good 64-bit ARM development platform, give Debian on the Jetson TX1 development kit a try.
I became interested in running Debian on NVIDIA's Tegra platform recently. NVIDIA is doing a great job getting support for Tegra upstream (u-boot, kernel, X.org and other projects). As part of ensuring good Debian support for Tegra, I wanted to install Debian on a Jetson TK1, a development board from NVIDIA based on the Tegra K1 chip (Tegra 124), a 32-bit ARM chip.
Ian Campbell enabled u-boot and Linux kernel support and added support in the installer for this device about a year ago. I updated some kernel options since there has been a lot of progress upstream in the meantime, performed a lot of tests and documented the installation process on the Debian wiki. Wookey made substantial improvements to the wiki as well.
If you're interested in a good 32-bit ARM development platform, give Debian on the Jetson TK1 a try.
There's also a 64-bit board. More on that later...