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