LCDPANEL_CAP_DRR_SUPPORTED 3950 drivers/gpu/drm/amd/include/atombios.h #define   LCDPANEL_CAP_DRR_SUPPORTED              0x2
LCDPANEL_CAP_DRR_SUPPORTED 3470 drivers/gpu/drm/radeon/atombios.h #define	LCDPANEL_CAP_DRR_SUPPORTED              0x2