MM_WR_TO_CFG_EN  4571 drivers/gpu/drm/radeon/r600.c 		WREG32(MM_CFGREGS_CNTL, MM_WR_TO_CFG_EN);
MM_WR_TO_CFG_EN  2072 drivers/gpu/drm/radeon/rv770.c 		WREG32(MM_CFGREGS_CNTL, MM_WR_TO_CFG_EN);