edt_ft5x06 is the touch controller for the Focaltech FT8006P display controller in the Mantix display, so there may be a problem with that driver or maybe something earlier in the log indicates a problem that then interfers with the touch controller.
You might want to post a bug report about it at https://source.puri.sm/Librem5/linux and attach your dmesg log and see if the Purism developers can determine what is the problem.