xref: /linux/include/linux/platform_data/mtd-nand-omap2.h (revision 03ab8e6297acd1bc0eedaa050e2a1635c576fd11)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2006 Micron Technology Inc.
4  */
5 
6 #ifndef	_MTD_NAND_OMAP2_H
7 #define	_MTD_NAND_OMAP2_H
8 
9 #include <linux/mtd/partitions.h>
10 #include <linux/mod_devicetable.h>
11 
12 #define	GPMC_BCH_NUM_REMAINDER	8
13 
14 enum nand_io {
15 	NAND_OMAP_PREFETCH_POLLED = 0,	/* prefetch polled mode, default */
16 	NAND_OMAP_POLLED,		/* polled mode, without prefetch */
17 	NAND_OMAP_PREFETCH_DMA,		/* prefetch enabled sDMA mode */
18 	NAND_OMAP_PREFETCH_IRQ		/* prefetch enabled irq mode */
19 };
20 
21 enum omap_ecc {
22 	/*
23 	 * 1-bit ECC: calculation and correction by SW
24 	 * ECC stored at end of spare area
25 	 */
26 	OMAP_ECC_HAM1_CODE_SW = 0,
27 
28 	/*
29 	 * 1-bit ECC: calculation by GPMC, Error detection by Software
30 	 * ECC layout compatible with ROM code layout
31 	 */
32 	OMAP_ECC_HAM1_CODE_HW,
33 	/* 4-bit  ECC calculation by GPMC, Error detection by Software */
34 	OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
35 	/* 4-bit  ECC calculation by GPMC, Error detection by ELM */
36 	OMAP_ECC_BCH4_CODE_HW,
37 	/* 8-bit  ECC calculation by GPMC, Error detection by Software */
38 	OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
39 	/* 8-bit  ECC calculation by GPMC, Error detection by ELM */
40 	OMAP_ECC_BCH8_CODE_HW,
41 	/* 16-bit ECC calculation by GPMC, Error detection by ELM */
42 	OMAP_ECC_BCH16_CODE_HW,
43 };
44 
45 struct gpmc_nand_regs {
46 	void __iomem	*gpmc_nand_command;
47 	void __iomem	*gpmc_nand_address;
48 	void __iomem	*gpmc_nand_data;
49 	void __iomem	*gpmc_prefetch_config1;
50 	void __iomem	*gpmc_prefetch_config2;
51 	void __iomem	*gpmc_prefetch_control;
52 	void __iomem	*gpmc_prefetch_status;
53 	void __iomem	*gpmc_ecc_config;
54 	void __iomem	*gpmc_ecc_control;
55 	void __iomem	*gpmc_ecc_size_config;
56 	void __iomem	*gpmc_ecc1_result;
57 	void __iomem	*gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
58 	void __iomem	*gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
59 	void __iomem	*gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
60 	void __iomem	*gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
61 	void __iomem	*gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
62 	void __iomem	*gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
63 	void __iomem	*gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
64 };
65 
66 static const struct of_device_id omap_nand_ids[] = {
67 	{ .compatible = "ti,omap2-nand", },
68 	{ .compatible = "ti,am64-nand", },
69 	{},
70 };
71 
72 #endif /* _MTD_NAND_OMAP2_H */
73