diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 551e608..fd8f3ca 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -370,6 +370,7 @@
 
 	rv515_vram_get_type(rdev);
 
+	r100_vram_init_sizes(rdev);
 	/* FIXME: we should enforce default clock in case GPU is not in
 	 * default setup
 	 */