--- /dev/null
+/*
+ * Copyright (C) 2015 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef _DT_BINDINGS_PHY_PISTACHIO
+#define _DT_BINDINGS_PHY_PISTACHIO
+
+#define REFCLK_XO_CRYSTAL 0x0
+#define REFCLK_X0_EXT_CLK 0x1
+#define REFCLK_CLK_CORE 0x2
+
+#endif /* _DT_BINDINGS_PHY_PISTACHIO */