FTM_SC_CLK_MASK_SHIFT   20 drivers/clocksource/timer-fsl-ftm.c #define FTM_SC_CLK(c)	((c) << FTM_SC_CLK_MASK_SHIFT)
FTM_SC_CLK_MASK_SHIFT   23 drivers/pwm/pwm-fsl-ftm.c #define FTM_SC_CLK(c)	(((c) + 1) << FTM_SC_CLK_MASK_SHIFT)
FTM_SC_CLK_MASK_SHIFT   24 drivers/rtc/rtc-fsl-ftm-alarm.c #define FTM_SC_CLK(c)		((c) << FTM_SC_CLK_MASK_SHIFT)
FTM_SC_CLK_MASK_SHIFT   31 include/linux/fsl/ftm.h #define FTM_SC_CLK_MASK		(3 << FTM_SC_CLK_MASK_SHIFT)