TIMERn_CTRL_MODE   26 drivers/clocksource/timer-efm32.c #define TIMERn_CTRL_MODE_UP			TIMERn_CTRL_MODE(0)
TIMERn_CTRL_MODE   27 drivers/clocksource/timer-efm32.c #define TIMERn_CTRL_MODE_DOWN			TIMERn_CTRL_MODE(1)