Commit e0ccf861 authored by Zhi-Jun You's avatar Zhi-Jun You Committed by Miquel Raynal
Browse files

mtd: spinand: winbond: add support for W25N04KV 



Add support for W25N04KV.

W25N04KV has 8-bit on-die ECC.

Signed-off-by: default avatarZhi-Jun You <hujy652@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240107144120.532-1-hujy652@gmail.com
parent 6613476e

drivers/mtd/nand/spi/winbond.c

+12 −0
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 


#define WINBOND_CFG_BUF_READ		BIT(3)



#define W25N04KV_STATUS_ECC_5_8_BITFLIPS	(3 << 4)



static SPINAND_OP_VARIANTS(read_cache_variants,

		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
@@ -118,6 +120,7 @@ static int w25n02kv_ecc_get_status(struct spinand_device *spinand, 
		return -EBADMSG;



	case STATUS_ECC_HAS_BITFLIPS:

	case W25N04KV_STATUS_ECC_5_8_BITFLIPS:

		/*

		 * Let's try to retrieve the real maximum number of bitflips

		 * in order to avoid forcing the wear-leveling layer to move
@@ -214,6 +217,15 @@ static const struct spinand_info winbond_spinand_table[] = { 
					      &update_cache_variants),

		     0,

		     SPINAND_ECCINFO(&w25m02gv_ooblayout, w25n02kv_ecc_get_status)),

	SPINAND_INFO("W25N04KV",

		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xaa, 0x23),

		     NAND_MEMORG(1, 2048, 128, 64, 4096, 40, 2, 1, 1),

		     NAND_ECCREQ(8, 512),

		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,

					      &write_cache_variants,

					      &update_cache_variants),

		     0,

		     SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)),

};



static int winbond_spinand_init(struct spinand_device *spinand)