1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2024 Rockchip Electronics Co., Ltd 4 * 5 * Authors: 6 * Dingqiang Lin <jon.lin@rock-chips.com> 7 */ 8 9 #ifndef __UBOOT__ 10 #include <linux/device.h> 11 #include <linux/kernel.h> 12 #endif 13 #include <linux/mtd/spinand.h> 14 15 #define SPINAND_MFR_ZBIT 0x5E 16 17 static SPINAND_OP_VARIANTS(read_cache_variants, 18 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), 19 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 20 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 21 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 24 25 static SPINAND_OP_VARIANTS(write_cache_variants, 26 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 27 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 28 29 static SPINAND_OP_VARIANTS(update_cache_variants, 30 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 31 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 32 33 static int zb35q01b_ooblayout_ecc(struct mtd_info *mtd, int section, 34 struct mtd_oob_region *region) 35 { 36 return -ERANGE; 37 } 38 39 static int zb35q01b_ooblayout_free(struct mtd_info *mtd, int section, 40 struct mtd_oob_region *region) 41 { 42 if (section) 43 return -ERANGE; 44 45 /* Reserve 2 bytes for the BBM. */ 46 region->offset = 2; 47 region->length = mtd->oobsize - 2; 48 49 return 0; 50 } 51 52 static const struct mtd_ooblayout_ops zb35q01b_ooblayout = { 53 .ecc = zb35q01b_ooblayout_ecc, 54 .rfree = zb35q01b_ooblayout_free, 55 }; 56 57 static const struct spinand_info zbit_spinand_table[] = { 58 SPINAND_INFO("ZB35Q01BYIG", 59 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1), 60 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 61 NAND_ECCREQ(8, 512), 62 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 63 &write_cache_variants, 64 &update_cache_variants), 65 0, 66 SPINAND_ECCINFO(&zb35q01b_ooblayout, NULL)), 67 }; 68 69 static const struct spinand_manufacturer_ops zbit_spinand_manuf_ops = { 70 }; 71 72 const struct spinand_manufacturer zbit_spinand_manufacturer = { 73 .id = SPINAND_MFR_ZBIT, 74 .name = "ZBIT", 75 .chips = zbit_spinand_table, 76 .nchips = ARRAY_SIZE(zbit_spinand_table), 77 .ops = &zbit_spinand_manuf_ops, 78 }; 79