DCE_CLOCK_FLAG_PIXCLK_YUV420_MODE 2101 drivers/gpu/drm/amd/include/atombios.h #define DCE_CLOCK_FLAG_PIXCLK_YUV420_MODE             0x04
DCE_CLOCK_FLAG_PIXCLK_YUV420_MODE 2756 drivers/gpu/drm/amd/include/atomfirmware.h   DCE_CLOCK_FLAG_PIXCLK_YUV420_MODE           = 0x04,