When compiling your own firmware, the V2.2 diagram provides the pins_CREALITY_V4_2_2.h file (found in Marlin/src/pins/stm32f1).
(If the image does not load, please refer to the text pinout below or the official Creality GitHub repository). Creality V2 2 Board Diagram
// Servo (BL-Touch) #define SERVO0_PIN PA1 // Shared with TEMP_BED_PIN! (Rare conflict) When compiling your own firmware, the V2