diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.h b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
index 441248b7a79e9d4a2ed4efc00983684e65d0a23f..c7780ae3272a8ba26b6b0fc9bd65e8567b785a97 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.h
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
@@ -77,7 +77,7 @@
 #define SOURCE_PIF_PKT_ALLOC_WR_EN	0x30830
 #define SOURCE_PIF_SW_RESET		0x30834
 
-/* bellow registers need access by mailbox */
+/* below registers need access by mailbox */
 /* source car addr */
 #define SOURCE_HDTX_CAR			0x0900
 #define SOURCE_DPTX_CAR			0x0904