diff --git a/include/uapi/linux/rk_hdmirx_config.h b/include/uapi/linux/rk_hdmirx_config.h
index a0b7e436aed9..26dcea790013 100644
--- a/include/uapi/linux/rk_hdmirx_config.h
+++ b/include/uapi/linux/rk_hdmirx_config.h
@@ -82,4 +82,7 @@ enum hdmirx_color_space {
 #define RK_HDMIRX_V4L2_EVENT_SIGNAL_LOST \
 	(V4L2_EVENT_PRIVATE_START + 1)
 
+#define RK_HDMIRX_V4L2_EVENT_AUDIOINFO \
+	(V4L2_EVENT_PRIVATE_START + 2)
+
 #endif /* _UAPI_RK_HDMIRX_CONFIG_H */