| From 8c573d9419bf61f7b66b6114f1171f3a8a4a0e38 Mon Sep 17 00:00:00 2001 |
| From: Thirumalesha Narasimhappa <nthirumalesha7@gmail.com> |
| Date: Sun, 8 Nov 2020 19:37:35 +0800 |
| Subject: [PATCH] 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 |
| --- |
| drivers/mtd/nand/spi/micron.c | 64 +++++++++++++++++++++++++++++++++++ |
| 1 file changed, 64 insertions(+) |
| |
| diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c |
| index afe3ba37dcfb8e..50b7295bc92226 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) |