RT5640_OVCD_SF_0P75 21 include/dt-bindings/sound/rt5640.h #define RT5640_OVCD_SF_0P75 1 RT5640_OVCD_SF_0P75 21 scripts/dtc/include-prefixes/dt-bindings/sound/rt5640.h #define RT5640_OVCD_SF_0P75 1