ATOM_TRASMITTER_CONFIG_V3_REFCLK_SEL_MASK 1353 drivers/gpu/drm/amd/include/atombios.h #define ATOM_TRASMITTER_CONFIG_V3_REFCLK_SEL_MASK            0x30
ATOM_TRASMITTER_CONFIG_V3_REFCLK_SEL_MASK 1147 drivers/gpu/drm/radeon/atombios.h #define ATOM_TRASMITTER_CONFIG_V3_REFCLK_SEL_MASK 	        0x30