[PATCH 6.6 384/638] mtd: spinand: esmt: Extend IDs to 5 bytes

Sasha Levin
2024-03-24T23:07:35Z

From: Ezra Buehler <ezra.buehler@husqvarnagroup.com>

[ Upstream commit 4bd14b2fd8a83a2f5220ba4ef323f741e11bfdfd ]

According to the datasheets, the ESMT chips in question will return a 5
byte long identification code where the last 3 bytes are the JEDEC
continuation codes (7Fh). Although, I would have expected 4 continuation
codes as Powerchip Semiconductor (C8h, corresponding to the parameter
page data) is located in bank 5 of the JEDEC database.

By matching the full 5 bytes we can avoid clashes with GigaDevice NAND
flashes.

This fix allows the MT7688-based GARDENA smart Gateway to boot again.

Fixes: aa08bf187f32 ("mtd: spinand: esmt: add support for F50D2G41KA")
Signed-off-by: Ezra Buehler <ezra.buehler@husqvarnagroup.com>
Reviewed-by: Martin Kurbanov <mmkurbanov@salutedevices.com>
Tested-by: Martin Kurbanov <mmkurbanov@salutedevices.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240125200108.24374-3-ezra@easyb.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mtd/nand/spi/esmt.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/spi/esmt.c b/drivers/mtd/nand/spi/esmt.c
index 31c439a557b18..4597a82de23a4 100644
--- a/drivers/mtd/nand/spi/esmt.c
+++ b/drivers/mtd/nand/spi/esmt.c
@@ -104,7 +104,8 @@ static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {

static const struct spinand_info esmt_c8_spinand_table[] = {
SPINAND_INFO("F50L1G41LB",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01),
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,
+ 0x7f, 0x7f),
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(1, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
@@ -113,7 +114,8 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
0,
SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
SPINAND_INFO("F50D1G41LB",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11),
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11, 0x7f,
+ 0x7f, 0x7f),
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(1, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
@@ -122,7 +124,8 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
0,
SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
SPINAND_INFO("F50D2G41KA",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51),
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51, 0x7f,
+ 0x7f, 0x7f),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
--
2.43.0