The display Connector is a 40-pin FPC connector which can connect external LCD panel (MIPI DSI) and touch screen (I2C) module as well. The pin definitions of this connector are shown as below. This is marked on the Banana Pi board as “DSI”.
DSI pin define:
please see: BPI-M2 Berry GPIO pine define
BPI-M2 Berry LCD touch panel accessories same as BPI-M3