ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SEL_MASK 1448 drivers/gpu/drm/amd/include/atombios.h #define ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SEL_MASK            0x30
ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SEL_MASK 1242 drivers/gpu/drm/radeon/atombios.h #define ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SEL_MASK 	        0x30