David Cofer over at NeuroRobotic Technologies has written an excellent set of articles on how to enable the Jetson TK1’s touch screen SPI to communicate with other devices at speeds up to 25 MHz.
The articles include background on the advantages of using this approach in real life applications, as well as a very good explanation configuring the kernel for SPI, and a wonderful explanation of the sometimes mysterious device tree.
First three parts are up, with more to come! Looky here:
Why are you still reading this? Go to the articles, it will make you a better person.