diff --git a/plat/allwinner/common/include/sunxi_def.h b/plat/allwinner/common/include/sunxi_def.h
new file mode 100644
index 0000000..e68fbe4
--- /dev/null
+++ b/plat/allwinner/common/include/sunxi_def.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __SUNXI_DEF_H__
+#define __SUNXI_DEF_H__
+
+/* Clock configuration */
+#define SUNXI_OSC24M_CLK_IN_HZ		24000000
+
+/* UART configuration */
+#define SUNXI_UART0_BAUDRATE		115200
+#define SUNXI_UART0_CLK_IN_HZ		SUNXI_OSC24M_CLK_IN_HZ
+
+#endif /* __SUNXI_DEF_H__ */