1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2022 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_SKYHIGH 0x01 16 17 static SPINAND_OP_VARIANTS(read_cache_variants, 18 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, 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 s35ml04g3_ooblayout_ecc(struct mtd_info *mtd, int section, 34 struct mtd_oob_region *region) 35 { 36 return -ERANGE; 37 } 38 39 static int s35ml04g3_ooblayout_free(struct mtd_info *mtd, int section, 40 struct mtd_oob_region *region) 41 { 42 if (section) 43 return -ERANGE; 44 45 region->offset = 2; 46 region->length = mtd->oobsize - 2; 47 48 return 0; 49 } 50 51 static const struct mtd_ooblayout_ops s35ml04g3_ooblayout = { 52 .ecc = s35ml04g3_ooblayout_ecc, 53 .rfree = s35ml04g3_ooblayout_free, 54 }; 55 56 static const struct spinand_info skyhigh_spinand_table[] = { 57 SPINAND_INFO("S35ML04G3", 58 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), 59 NAND_MEMORG(1, 2048, 128, 64, 4096, 2, 1, 1), 60 NAND_ECCREQ(4, 512), 61 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 62 &write_cache_variants, 63 &update_cache_variants), 64 SPINAND_HAS_QE_BIT, 65 SPINAND_ECCINFO(&s35ml04g3_ooblayout, NULL)), 66 }; 67 68 static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = { 69 }; 70 71 const struct spinand_manufacturer skyhigh_spinand_manufacturer = { 72 .id = SPINAND_MFR_SKYHIGH, 73 .name = "skyhigh", 74 .chips = skyhigh_spinand_table, 75 .nchips = ARRAY_SIZE(skyhigh_spinand_table), 76 .ops = &skyhigh_spinand_manuf_ops, 77 }; 78