diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 3462b64..2c6dbde 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -167,7 +167,7 @@ static void rs690_mc_init(struct radeon_device *rdev)
 	 * UMA memory.
 	 */
 	if (rdev->mc.igp_sideport_enabled &&
-	    (rdev->mc.real_vram_size == (384 * 1024 * 1024))) {
+	    (rdev->mc.real_vram_size > (128 * 1024 * 1024))) {
 		base += 128 * 1024 * 1024;
 		rdev->mc.real_vram_size -= 128 * 1024 * 1024;
 		rdev->mc.mc_vram_size = rdev->mc.real_vram_size;