qmk_firmware/keyboards/at_at/660m/660m.c

#include "quantum.h"

void board_init(void) {
  SYSCFG->CFGR1 |= SYSCFG_CFGR1_I2C1_DMA_RMP;
  SYSCFG->CFGR1 &= ~(SYSCFG_CFGR1_SPI2_DMA_RMP);
}