I bought a 3,2" touch screen which was advertised (German website) for Raspbery and ODroid-C1:
Wird einfach auf den ODROID-C1 oder Raspberry Pi Einplatinencomputer aufgesteckt!
Is simply plugged onto your ODROID-C1 or Raspberry Pi single board computer.
After it was shipped, the manual says
Dieses TFT-Display darf nur in Verbindung mit dem ODROID-C1 verwendet werden.
This TFT display must only be used with the ODROID-C1.
So now I wonder whether it's safe to connect it to the Raspberry Pi 2, since I don't own a ODROID-C1.
Link to hardkernel, which seems to be the original producer. Depending on the pin numbering system, I can only figure out that the 3.3V and 5.0V power supply could match.