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