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mtd: spinand: fmsh: add support for FM25G{01,02}B

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Add support for FudanMicro FM25G01B SPI NAND and FudanMicro FM25G02B SPI
NAND.

FM25G01B datasheet: https://www.fmsh.com/nvm/FM25G01B_ds_eng.pdf
FM25G02B datasheet: https://www.fmsh.com/nvm/FM25G02B_ds_eng.pdf

Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Ziyang Huang
2026-06-23 22:54:22 +08:00
committed by Miquel Raynal
parent 2b7baaddf1
commit d5a5c9eb2e
1 changed files with 95 additions and 0 deletions
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95
drivers/mtd/nand/spi/fmsh.c
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@@ -9,6 +9,16 @@
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define FM25G01B_STATUS_ECC_MASK (7 << 4)
#define FM25G01B_STATUS_ECC_NO_BITFLIPS (0 << 4)
#define FM25G01B_STATUS_ECC_1_3_BITFLIPS (1 << 4)
#define FM25G01B_STATUS_ECC_4_BITFLIPS (2 << 4)
#define FM25G01B_STATUS_ECC_5_BITFLIPS (3 << 4)
#define FM25G01B_STATUS_ECC_6_BITFLIPS (4 << 4)
#define FM25G01B_STATUS_ECC_7_BITFLIPS (5 << 4)
#define FM25G01B_STATUS_ECC_8_BITFLIPS (6 << 4)
#define FM25G01B_STATUS_ECC_UNCOR_ERROR (7 << 4)
#define FM25S01BI3_STATUS_ECC_MASK (7 << 4)
#define FM25S01BI3_STATUS_ECC_NO_BITFLIPS (0 << 4)
#define FM25S01BI3_STATUS_ECC_1_3_BITFLIPS (1 << 4)
@@ -34,6 +44,66 @@ static SPINAND_OP_VARIANTS(update_cache_variants,
SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
static int fm25g01b_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
region->offset = 64;
region->length = 64;
return 0;
}
static int fm25g01b_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
/* reserve 2 bytes for the BBM */
region->offset = 2;
region->length = 62;
return 0;
}
static int fm25g01b_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
switch (status & FM25G01B_STATUS_ECC_MASK) {
case FM25G01B_STATUS_ECC_NO_BITFLIPS:
return 0;
case FM25G01B_STATUS_ECC_1_3_BITFLIPS:
return 3;
case FM25G01B_STATUS_ECC_4_BITFLIPS:
return 4;
case FM25G01B_STATUS_ECC_5_BITFLIPS:
return 5;
case FM25G01B_STATUS_ECC_6_BITFLIPS:
return 6;
case FM25G01B_STATUS_ECC_7_BITFLIPS:
return 7;
case FM25G01B_STATUS_ECC_8_BITFLIPS:
return 8;
case FM25G01B_STATUS_ECC_UNCOR_ERROR:
return -EBADMSG;
default:
break;
}
return -EINVAL;
}
static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
@@ -102,6 +172,11 @@ static int fm25s01bi3_ooblayout_free(struct mtd_info *mtd, int section,
return 0;
}
static const struct mtd_ooblayout_ops fm25g01b_ooblayout = {
.ecc = fm25g01b_ooblayout_ecc,
.free = fm25g01b_ooblayout_free,
};
static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
.ecc = fm25s01a_ooblayout_ecc,
.free = fm25s01a_ooblayout_free,
@@ -113,6 +188,26 @@ static const struct mtd_ooblayout_ops fm25s01bi3_ooblayout = {
};
static const struct spinand_info fmsh_spinand_table[] = {
SPINAND_INFO("FM25G01B",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd1),
NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1),
NAND_ECCREQ(8, 528),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&fm25g01b_ooblayout,
fm25g01b_ecc_get_status)),
SPINAND_INFO("FM25G02B",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd2),
NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1),
NAND_ECCREQ(8, 528),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&fm25g01b_ooblayout,
fm25g01b_ecc_get_status)),
SPINAND_INFO("FM25S01A",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),