FREF              251 arch/m68k/coldfire/m53xx.c #define FREF		16000   /* KHz */
FREF              211 drivers/media/dvb-frontends/itd1000.c #define FREF 16
FREF              186 drivers/media/tuners/mt2060.c #define FREF 16000       // Quartz oscillator 16 MHz
FREF              114 drivers/media/tuners/mt2266.c #define FREF 30000       // Quartz oscillator 30 MHz