Commit 0737c694 authored by Miquel Raynal's avatar Miquel Raynal
Browse files

mtd: spinand: winbond: Add support for W35N01JW in single mode 



Add support for the W35N series by describing the smaller (single die)
chip. It has 1b/512B ECC support and its own OOB layout.

Acked-by: default avatarTudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 140bb9e9

drivers/mtd/nand/spi/winbond.c

+54 −0
Original line number Diff line number Diff line
@@ -23,6 +23,16 @@ 
 * "X4" in the core is equivalent to "quad output" in the datasheets.

 */



static SPINAND_OP_VARIANTS(read_cache_octal_variants,

		SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0));



static SPINAND_OP_VARIANTS(write_cache_octal_variants,

		SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));



static SPINAND_OP_VARIANTS(update_cache_octal_variants,

		SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));



static SPINAND_OP_VARIANTS(read_cache_dual_quad_dtr_variants,

		SPINAND_PAGE_READ_FROM_CACHE_1S_4D_4D_OP(0, 8, NULL, 0, 80 * HZ_PER_MHZ),

		SPINAND_PAGE_READ_FROM_CACHE_1S_1D_4D_OP(0, 2, NULL, 0, 80 * HZ_PER_MHZ),
@@ -141,6 +151,41 @@ static const struct mtd_ooblayout_ops w25n02kv_ooblayout = { 
	.free = w25n02kv_ooblayout_free,

};



static int w35n01jw_ooblayout_ecc(struct mtd_info *mtd, int section,

				  struct mtd_oob_region *region)

{

	if (section > 7)

		return -ERANGE;



	region->offset = (16 * section) + 12;

	region->length = 4;



	return 0;

}



static int w35n01jw_ooblayout_free(struct mtd_info *mtd, int section,

				   struct mtd_oob_region *region)

{

	if (section > 7)

		return -ERANGE;



	region->offset = 16 * section;

	region->length = 12;



	/* Extract BBM */

	if (!section) {

		region->offset += 2;

		region->length -= 2;

	}



	return 0;

}



static const struct mtd_ooblayout_ops w35n01jw_ooblayout = {

	.ecc = w35n01jw_ooblayout_ecc,

	.free = w35n01jw_ooblayout_free,

};



static int w25n02kv_ecc_get_status(struct spinand_device *spinand,

				   u8 status)

{
@@ -227,6 +272,15 @@ static const struct spinand_info winbond_spinand_table[] = { 
					      &update_cache_variants),

		     0,

		     SPINAND_ECCINFO(&w25n01kv_ooblayout, w25n02kv_ecc_get_status)),

	SPINAND_INFO("W35N01JW", /* 1.8V */

		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xdc, 0x21),

		     NAND_MEMORG(1, 4096, 128, 64, 512, 10, 1, 1, 1),

		     NAND_ECCREQ(1, 512),

		     SPINAND_INFO_OP_VARIANTS(&read_cache_octal_variants,

					      &write_cache_octal_variants,

					      &update_cache_octal_variants),

		     0,

		     SPINAND_ECCINFO(&w35n01jw_ooblayout, NULL)),

	/* 2G-bit densities */

	SPINAND_INFO("W25M02GV", /* 2x1G-bit 3.3V */

		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xab, 0x21),