The phyCORE-AM572x Rapid Development Kit and Linux BSP includes a Matrix APP Launcher application in pre-built binaries as an interface to navigate and try various demos. This demo starts automatically when Linux boots and can be viewed when an external display is connected. Navigation and control of the application is done through the touchscreen. If your touchscreen is not working, use the following guide for instructions to re-calibrate.
Solution
http://processors.wiki.ti.com/index.php/How_to_Recalibrate_the_Touchscreen