ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SRC_EXT 1452 drivers/gpu/drm/amd/include/atombios.h #define ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SRC_EXT           0x30   // Changed comparing to V3
ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SRC_EXT 1246 drivers/gpu/drm/radeon/atombios.h #define ATOM_TRANSMITTER_CONFIG_V4_REFCLK_SRC_EXT           0x30   // Changed comparing to V3