TIM_BDTR_BKP 495 drivers/pwm/pwm-stm32.c u32 mask = (index == 0) ? TIM_BDTR_BKE | TIM_BDTR_BKP | TIM_BDTR_BKF TIM_BDTR_BKP 504 drivers/pwm/pwm-stm32.c bdtr |= TIM_BDTR_BKP | TIM_BDTR_BK2P;