diff --git a/include/rtc_def.h b/include/rtc_def.h
new file mode 100644
index 0000000..6179797
--- /dev/null
+++ b/include/rtc_def.h
@@ -0,0 +1,36 @@
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __rtc_def_h
+#define __rtc_def_h
+
+/*
+ * The struct used to pass data from the generic interface code to
+ * the hardware dependend low-level code ande vice versa. Identical
+ * to struct rtc_time used by the Linux kernel.
+ *
+ * Note that there are small but significant differences to the
+ * common "struct time":
+ *
+ *		struct time:		struct rtc_time:
+ * tm_mon	0 ... 11		1 ... 12
+ * tm_year	years since 1900	years since 0
+ */
+
+struct rtc_time {
+	int tm_sec;
+	int tm_min;
+	int tm_hour;
+	int tm_mday;
+	int tm_mon;
+	int tm_year;
+	int tm_wday;
+	int tm_yday;
+	int tm_isdst;
+};
+
+#endif