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
14enum 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
21enum 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
45struct 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
66static 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

source code of linux/include/linux/platform_data/mtd-nand-omap2.h