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| author | Thirumalesha Narasimhappa <nthirumalesha7@gmail.com> | 2020-11-08 19:37:35 +0800 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-12-10 22:37:32 +0100 |
| commit | 8c573d9419bf61f7b66b6114f1171f3a8a4a0e38 (patch) | |
| tree | b9bec82d07684da775008866f2e0c2429c42f89e /drivers/mtd | |
| parent | bdb84a22b02b0c2ca76bb3e3e16942338f67999b (diff) | |
| download | linux-8c573d9419bf61f7b66b6114f1171f3a8a4a0e38.tar.gz linux-8c573d9419bf61f7b66b6114f1171f3a8a4a0e38.tar.bz2 linux-8c573d9419bf61f7b66b6114f1171f3a8a4a0e38.zip | |
mtd: spinand: micron: Add support for MT29F2G01AAAED
The MT29F2G01AAAED is a single die, 2Gb Micron SPI NAND Flash with 4-bit
ECC
Signed-off-by: Thirumalesha Narasimhappa <nthirumalesha7@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201108113735.2533-3-nthirumalesha7@gmail.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/spi/micron.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c index afe3ba37dcfb..50b7295bc922 100644 --- a/drivers/mtd/nand/spi/micron.c +++ b/drivers/mtd/nand/spi/micron.c @@ -44,6 +44,19 @@ static SPINAND_OP_VARIANTS(x4_update_cache_variants, SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), SPINAND_PROG_LOAD(false, 0, NULL, 0)); +/* Micron MT29F2G01AAAED Device */ +static SPINAND_OP_VARIANTS(x4_read_cache_variants, + SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); + +static SPINAND_OP_VARIANTS(x1_write_cache_variants, + SPINAND_PROG_LOAD(true, 0, NULL, 0)); + +static SPINAND_OP_VARIANTS(x1_update_cache_variants, + SPINAND_PROG_LOAD(false, 0, NULL, 0)); + static int micron_8_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { @@ -74,6 +87,47 @@ static const struct mtd_ooblayout_ops micron_8_ooblayout = { .free = micron_8_ooblayout_free, }; +static int micron_4_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + struct spinand_device *spinand = mtd_to_spinand(mtd); + + if (section >= spinand->base.memorg.pagesize / + mtd->ecc_step_size) + return -ERANGE; + + region->offset = (section * 16) + 8; + region->length = 8; + + return 0; +} + +static int micron_4_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + struct spinand_device *spinand = mtd_to_spinand(mtd); + + if (section >= spinand->base.memorg.pagesize / + mtd->ecc_step_size) + return -ERANGE; + + if (section) { + region->offset = 16 * section; + region->length = 8; + } else { + /* section 0 has two bytes reserved for the BBM */ + region->offset = 2; + region->length = 6; + } + + return 0; +} + +static const struct mtd_ooblayout_ops micron_4_ooblayout = { + .ecc = micron_4_ooblayout_ecc, + .free = micron_4_ooblayout_free, +}; + static int micron_select_target(struct spinand_device *spinand, unsigned int target) { @@ -217,6 +271,16 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), + /* M69A 2Gb 3.3V */ + SPINAND_INFO("MT29F2G01AAAED", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9F), + NAND_MEMORG(1, 2048, 64, 64, 2048, 80, 2, 1, 1), + NAND_ECCREQ(4, 512), + SPINAND_INFO_OP_VARIANTS(&x4_read_cache_variants, + &x1_write_cache_variants, + &x1_update_cache_variants), + 0, + SPINAND_ECCINFO(µn_4_ooblayout, NULL)), }; static int micron_spinand_init(struct spinand_device *spinand) |