AnsweredAssumed Answered

keypad port doesn't show up in Linux

Question asked by David Luberger on Oct 2, 2018
Latest reply on Oct 3, 2018 by David Luberger

I've setup my device tree, done all the mappings, i have a 5x8 matrix keyboard i have connected to the kpp, configured for letters a-z and 0-9 plus up down esc enter, but when the OS is running and i have the terminal on my lcd, pressing keys does nothing. I looked in /dev and /proc but i don't see anything anywhere that indicates the keypad is actively being scanned and no letters show up when i press a key.  if i run evtest it only shows the power button (tied to the onoff input, not a kpp button) and my touchscreen controller.  when the os is starting it does hang for a bit on the message "LSB: preliminary key mapping" but other than that i don't see any indication that the keypad port is setup as a keyboard device in linux.


My device tree dts file is attached, as well as the console output during bootup.