Configuration example for Marlin 2.0.3 for MKS Gen L 2.0 board with TMC2208(UART) drivers and BLTouch V2.0
Pins:
BLTouch--Board
ZMIN -- D18
S -- D11
5V -- 5V
*You can cutoff one of GND wires(blue one) on BLTouch, another GND wire is connected to ground on printing head.