PIXEL_CLOCK_V7_MISC_REF_DIV_SRC 2040 drivers/gpu/drm/amd/include/atombios.h #define PIXEL_CLOCK_V7_MISC_REF_DIV_SRC             0x30
PIXEL_CLOCK_V7_MISC_REF_DIV_SRC 2696 drivers/gpu/drm/amd/include/atomfirmware.h   PIXEL_CLOCK_V7_MISC_REF_DIV_SRC             = 0x30,