/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* mach-davinci/nand.h
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*
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* Copyright © 2006 Texas Instruments.
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*
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* Ported to 2.6.23 Copyright © 2008 by
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* Sander Huijsen <Shuijsen@optelecom-nkf.com>
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* Troy Kisky <troy.kisky@boundarydevices.com>
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* Dirk Behme <Dirk.Behme@gmail.com>
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*
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* --------------------------------------------------------------------------
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*/
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#ifndef __ARCH_ARM_DAVINCI_NAND_H
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#define __ARCH_ARM_DAVINCI_NAND_H
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#include <linux/mtd/rawnand.h>
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#define NANDFCR_OFFSET 0x60
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#define NANDFSR_OFFSET 0x64
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#define NANDF1ECC_OFFSET 0x70
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/* 4-bit ECC syndrome registers */
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#define NAND_4BIT_ECC_LOAD_OFFSET 0xbc
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#define NAND_4BIT_ECC1_OFFSET 0xc0
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#define NAND_4BIT_ECC2_OFFSET 0xc4
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#define NAND_4BIT_ECC3_OFFSET 0xc8
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#define NAND_4BIT_ECC4_OFFSET 0xcc
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#define NAND_ERR_ADD1_OFFSET 0xd0
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#define NAND_ERR_ADD2_OFFSET 0xd4
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#define NAND_ERR_ERRVAL1_OFFSET 0xd8
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#define NAND_ERR_ERRVAL2_OFFSET 0xdc
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/* NOTE: boards don't need to use these address bits
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* for ALE/CLE unless they support booting from NAND.
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* They're used unless platform data overrides them.
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*/
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#define MASK_ALE 0x08
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#define MASK_CLE 0x10
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struct davinci_nand_pdata { /* platform_data */
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uint32_t mask_ale;
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uint32_t mask_cle;
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/*
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* 0-indexed chip-select number of the asynchronous
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* interface to which the NAND device has been connected.
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*
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* So, if you have NAND connected to CS3 of DA850, you
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* will pass '1' here. Since the asynchronous interface
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* on DA850 starts from CS2.
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*/
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uint32_t core_chipsel;
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/* for packages using two chipselects */
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uint32_t mask_chipsel;
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/* board's default static partition info */
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struct mtd_partition *parts;
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unsigned nr_parts;
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/* none == NAND_ECC_ENGINE_TYPE_NONE (strongly *not* advised!!)
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* soft == NAND_ECC_ENGINE_TYPE_SOFT
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* else == NAND_ECC_ENGINE_TYPE_ON_HOST, according to ecc_bits
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*
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* All DaVinci-family chips support 1-bit hardware ECC.
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* Newer ones also support 4-bit ECC, but are awkward
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* using it with large page chips.
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*/
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enum nand_ecc_engine_type engine_type;
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enum nand_ecc_placement ecc_placement;
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u8 ecc_bits;
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/* e.g. NAND_BUSWIDTH_16 */
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unsigned options;
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/* e.g. NAND_BBT_USE_FLASH */
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unsigned bbt_options;
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/* Main and mirror bbt descriptor overrides */
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struct nand_bbt_descr *bbt_td;
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struct nand_bbt_descr *bbt_md;
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/* Access timings */
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struct davinci_aemif_timing *timing;
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};
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#endif /* __ARCH_ARM_DAVINCI_NAND_H */
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