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diff --git a/arch/arm/include/asm/arch-davinci/nand_defs.h b/arch/arm/include/asm/arch-davinci/nand_defs.h
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+++ b/arch/arm/include/asm/arch-davinci/nand_defs.h
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+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Parts shamelesly stolen from Linux Kernel source tree.
+ *
+ * ------------------------------------------------------------
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef _NAND_DEFS_H_
+#define _NAND_DEFS_H_
+
+#include <asm/arch/hardware.h>
+
+#ifdef CONFIG_SOC_DM646X
+#define MASK_CLE 0x80000
+#define MASK_ALE 0x40000
+#else
+#define MASK_CLE 0x10
+#define MASK_ALE 0x08
+#endif
+
+#define NAND_READ_START 0x00
+#define NAND_READ_END 0x30
+#define NAND_STATUS 0x70
+
+extern void davinci_nand_init(struct nand_chip *nand);
+
+#endif
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