Commit 4bd14b2f authored by Ezra Buehler's avatar Ezra Buehler Committed by Miquel Raynal
Browse files

mtd: spinand: esmt: Extend IDs to 5 bytes 



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: aa08bf18 ("mtd: spinand: esmt: add support for F50D2G41KA")
Signed-off-by: default avatarEzra Buehler <ezra.buehler@husqvarnagroup.com>
Reviewed-by: default avatarMartin Kurbanov <mmkurbanov@salutedevices.com>
Tested-by: default avatarMartin Kurbanov <mmkurbanov@salutedevices.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240125200108.24374-3-ezra@easyb.ch
parent 34a95673

drivers/mtd/nand/spi/esmt.c

+6 −3
Original line number Diff line number Diff line
@@ -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,