developer | 41370d5 | 2022-03-16 16:01:59 +0800 | [diff] [blame] | 1 | From 8c573d9419bf61f7b66b6114f1171f3a8a4a0e38 Mon Sep 17 00:00:00 2001 |
| 2 | From: Thirumalesha Narasimhappa <nthirumalesha7@gmail.com> |
| 3 | Date: Sun, 8 Nov 2020 19:37:35 +0800 |
| 4 | Subject: [PATCH] mtd: spinand: micron: Add support for MT29F2G01AAAED |
| 5 | |
| 6 | The MT29F2G01AAAED is a single die, 2Gb Micron SPI NAND Flash with 4-bit |
| 7 | ECC |
| 8 | |
| 9 | Signed-off-by: Thirumalesha Narasimhappa <nthirumalesha7@gmail.com> |
| 10 | Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> |
| 11 | Link: https://lore.kernel.org/linux-mtd/20201108113735.2533-3-nthirumalesha7@gmail.com |
| 12 | --- |
| 13 | drivers/mtd/nand/spi/micron.c | 64 +++++++++++++++++++++++++++++++++++ |
| 14 | 1 file changed, 64 insertions(+) |
| 15 | |
| 16 | diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c |
| 17 | index afe3ba37dcfb8e..50b7295bc92226 100644 |
| 18 | --- a/drivers/mtd/nand/spi/micron.c |
| 19 | +++ b/drivers/mtd/nand/spi/micron.c |
| 20 | @@ -44,6 +44,19 @@ static SPINAND_OP_VARIANTS(x4_update_cache_variants, |
| 21 | SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), |
| 22 | SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
| 23 | |
| 24 | +/* Micron MT29F2G01AAAED Device */ |
| 25 | +static SPINAND_OP_VARIANTS(x4_read_cache_variants, |
| 26 | + SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), |
| 27 | + SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), |
| 28 | + SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), |
| 29 | + SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); |
| 30 | + |
| 31 | +static SPINAND_OP_VARIANTS(x1_write_cache_variants, |
| 32 | + SPINAND_PROG_LOAD(true, 0, NULL, 0)); |
| 33 | + |
| 34 | +static SPINAND_OP_VARIANTS(x1_update_cache_variants, |
| 35 | + SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
| 36 | + |
| 37 | static int micron_8_ooblayout_ecc(struct mtd_info *mtd, int section, |
| 38 | struct mtd_oob_region *region) |
| 39 | { |
| 40 | @@ -74,6 +87,47 @@ static const struct mtd_ooblayout_ops micron_8_ooblayout = { |
| 41 | .free = micron_8_ooblayout_free, |
| 42 | }; |
| 43 | |
| 44 | +static int micron_4_ooblayout_ecc(struct mtd_info *mtd, int section, |
| 45 | + struct mtd_oob_region *region) |
| 46 | +{ |
| 47 | + struct spinand_device *spinand = mtd_to_spinand(mtd); |
| 48 | + |
| 49 | + if (section >= spinand->base.memorg.pagesize / |
| 50 | + mtd->ecc_step_size) |
| 51 | + return -ERANGE; |
| 52 | + |
| 53 | + region->offset = (section * 16) + 8; |
| 54 | + region->length = 8; |
| 55 | + |
| 56 | + return 0; |
| 57 | +} |
| 58 | + |
| 59 | +static int micron_4_ooblayout_free(struct mtd_info *mtd, int section, |
| 60 | + struct mtd_oob_region *region) |
| 61 | +{ |
| 62 | + struct spinand_device *spinand = mtd_to_spinand(mtd); |
| 63 | + |
| 64 | + if (section >= spinand->base.memorg.pagesize / |
| 65 | + mtd->ecc_step_size) |
| 66 | + return -ERANGE; |
| 67 | + |
| 68 | + if (section) { |
| 69 | + region->offset = 16 * section; |
| 70 | + region->length = 8; |
| 71 | + } else { |
| 72 | + /* section 0 has two bytes reserved for the BBM */ |
| 73 | + region->offset = 2; |
| 74 | + region->length = 6; |
| 75 | + } |
| 76 | + |
| 77 | + return 0; |
| 78 | +} |
| 79 | + |
| 80 | +static const struct mtd_ooblayout_ops micron_4_ooblayout = { |
| 81 | + .ecc = micron_4_ooblayout_ecc, |
| 82 | + .free = micron_4_ooblayout_free, |
| 83 | +}; |
| 84 | + |
| 85 | static int micron_select_target(struct spinand_device *spinand, |
| 86 | unsigned int target) |
| 87 | { |
| 88 | @@ -217,6 +271,16 @@ static const struct spinand_info micron_spinand_table[] = { |
| 89 | SPINAND_ECCINFO(µn_8_ooblayout, |
| 90 | micron_8_ecc_get_status), |
| 91 | SPINAND_SELECT_TARGET(micron_select_target)), |
| 92 | + /* M69A 2Gb 3.3V */ |
| 93 | + SPINAND_INFO("MT29F2G01AAAED", |
| 94 | + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9F), |
| 95 | + NAND_MEMORG(1, 2048, 64, 64, 2048, 80, 2, 1, 1), |
| 96 | + NAND_ECCREQ(4, 512), |
| 97 | + SPINAND_INFO_OP_VARIANTS(&x4_read_cache_variants, |
| 98 | + &x1_write_cache_variants, |
| 99 | + &x1_update_cache_variants), |
| 100 | + 0, |
| 101 | + SPINAND_ECCINFO(µn_4_ooblayout, NULL)), |
| 102 | }; |
| 103 | |
| 104 | static int micron_spinand_init(struct spinand_device *spinand) |