Commit be7a05db authored by Miquel Raynal's avatar Miquel Raynal
Browse files

mtd: spinand: winbond: Add support for DTR operations 



W25N01JW and W25N02JW support many DTR read modes in single, dual and
quad configurations.

DTR modes however cannot be used at 166MHz, as the bus frequency in
this case must be lowered to 80MHz.

Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 61c7155e

drivers/mtd/nand/spi/winbond.c

+5 −0
Original line number Diff line number Diff line
@@ -24,10 +24,15 @@ 
 */



static SPINAND_OP_VARIANTS(read_cache_dtr_variants,

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

		SPINAND_PAGE_READ_FROM_CACHE_X4_DTR_OP(0, 2, NULL, 0, 80 * HZ_PER_MHZ),

		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_DTR_OP(0, 4, NULL, 0, 80 * HZ_PER_MHZ),

		SPINAND_PAGE_READ_FROM_CACHE_X2_DTR_OP(0, 2, NULL, 0, 80 * HZ_PER_MHZ),

		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_DTR_OP(0, 2, NULL, 0, 80 * HZ_PER_MHZ),

		SPINAND_PAGE_READ_FROM_CACHE_FAST_OP(0, 1, NULL, 0),

		SPINAND_PAGE_READ_FROM_CACHE_OP(0, 1, NULL, 0, 54 * HZ_PER_MHZ));