4 * Copyright © 2006 Texas Instruments.
6 * Ported to 2.6.23 Copyright © 2008 by
11 * --------------------------------------------------------------------------
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #ifndef __ARCH_ARM_DAVINCI_NAND_H
29 #define __ARCH_ARM_DAVINCI_NAND_H
31 #include <linux/mtd/rawnand.h>
33 #define NANDFCR_OFFSET 0x60
34 #define NANDFSR_OFFSET 0x64
35 #define NANDF1ECC_OFFSET 0x70
37 /* 4-bit ECC syndrome registers */
38 #define NAND_4BIT_ECC_LOAD_OFFSET 0xbc
39 #define NAND_4BIT_ECC1_OFFSET 0xc0
40 #define NAND_4BIT_ECC2_OFFSET 0xc4
41 #define NAND_4BIT_ECC3_OFFSET 0xc8
42 #define NAND_4BIT_ECC4_OFFSET 0xcc
43 #define NAND_ERR_ADD1_OFFSET 0xd0
44 #define NAND_ERR_ADD2_OFFSET 0xd4
45 #define NAND_ERR_ERRVAL1_OFFSET 0xd8
46 #define NAND_ERR_ERRVAL2_OFFSET 0xdc
48 /* NOTE: boards don't need to use these address bits
49 * for ALE/CLE unless they support booting from NAND.
50 * They're used unless platform data overrides them.
55 struct davinci_nand_pdata { /* platform_data */
60 * 0-indexed chip-select number of the asynchronous
61 * interface to which the NAND device has been connected.
63 * So, if you have NAND connected to CS3 of DA850, you
64 * will pass '1' here. Since the asynchronous interface
65 * on DA850 starts from CS2.
67 uint32_t core_chipsel;
69 /* for packages using two chipselects */
70 uint32_t mask_chipsel;
72 /* board's default static partition info */
73 struct mtd_partition *parts;
76 /* none == NAND_ECC_NONE (strongly *not* advised!!)
77 * soft == NAND_ECC_SOFT
78 * else == NAND_ECC_HW, according to ecc_bits
80 * All DaVinci-family chips support 1-bit hardware ECC.
81 * Newer ones also support 4-bit ECC, but are awkward
82 * using it with large page chips.
84 nand_ecc_modes_t ecc_mode;
87 /* e.g. NAND_BUSWIDTH_16 */
89 /* e.g. NAND_BBT_USE_FLASH */
92 /* Main and mirror bbt descriptor overrides */
93 struct nand_bbt_descr *bbt_td;
94 struct nand_bbt_descr *bbt_md;
97 struct davinci_aemif_timing *timing;
100 #endif /* __ARCH_ARM_DAVINCI_NAND_H */