linux/platform_data/mtd-nand-omap2.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2006 Micron Technology Inc.
0004  */
0005
0006 #ifndef _MTD_NAND_OMAP2_H
0007 #define _MTD_NAND_OMAP2_H
0008
0009 #include <linux/mtd/partitions.h>
0010 #include <linux/mod_devicetable.h>
0011
0012 #define GPMC_BCH_NUM_REMAINDER  8
0013
0014 enum nand_io {
0015     NAND_OMAP_PREFETCH_POLLED = 0,  /* prefetch polled mode, default */
0016     NAND_OMAP_POLLED,       /* polled mode, without prefetch */
0017     NAND_OMAP_PREFETCH_DMA,     /* prefetch enabled sDMA mode */
0018     NAND_OMAP_PREFETCH_IRQ      /* prefetch enabled irq mode */
0019 };
0020
0021 enum omap_ecc {
0022     /*
0023      * 1-bit ECC: calculation and correction by SW
0024      * ECC stored at end of spare area
0025      */
0026     OMAP_ECC_HAM1_CODE_SW = 0,
0027
0028     /*
0029      * 1-bit ECC: calculation by GPMC, Error detection by Software
0030      * ECC layout compatible with ROM code layout
0031      */
0032     OMAP_ECC_HAM1_CODE_HW,
0033     /* 4-bit  ECC calculation by GPMC, Error detection by Software */
0034     OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
0035     /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
0036     OMAP_ECC_BCH4_CODE_HW,
0037     /* 8-bit  ECC calculation by GPMC, Error detection by Software */
0038     OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
0039     /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
0040     OMAP_ECC_BCH8_CODE_HW,
0041     /* 16-bit ECC calculation by GPMC, Error detection by ELM */
0042     OMAP_ECC_BCH16_CODE_HW,
0043 };
0044
0045 struct gpmc_nand_regs {
0046     void __iomem    *gpmc_nand_command;
0047     void __iomem    *gpmc_nand_address;
0048     void __iomem    *gpmc_nand_data;
0049     void __iomem    *gpmc_prefetch_config1;
0050     void __iomem    *gpmc_prefetch_config2;
0051     void __iomem    *gpmc_prefetch_control;
0052     void __iomem    *gpmc_prefetch_status;
0053     void __iomem    *gpmc_ecc_config;
0054     void __iomem    *gpmc_ecc_control;
0055     void __iomem    *gpmc_ecc_size_config;
0056     void __iomem    *gpmc_ecc1_result;
0057     void __iomem    *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
0058     void __iomem    *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
0059     void __iomem    *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
0060     void __iomem    *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
0061     void __iomem    *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
0062     void __iomem    *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
0063     void __iomem    *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
0064 };
0065
0066 static const struct of_device_id omap_nand_ids[] = {
0067     { .compatible = "ti,omap2-nand", },
0068     { .compatible = "ti,am64-nand", },
0069     {},
0070 };
0071
0072 #endif /* _MTD_NAND_OMAP2_H */