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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-01-10 15:45:27 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-01-15 19:24:08 +0100 |
| commit | 1ea808b4d15b9bddc48af75b0668b82366b5b927 (patch) | |
| tree | 5b4e819b5db9f7c0fec8ad2244dcb4cd9f57bd30 | |
| parent | 8586bc8d95488dfaadbc1af89ba59900d2c39119 (diff) | |
| download | linux-stable-1ea808b4d15b9bddc48af75b0668b82366b5b927.tar.gz linux-stable-1ea808b4d15b9bddc48af75b0668b82366b5b927.tar.bz2 linux-stable-1ea808b4d15b9bddc48af75b0668b82366b5b927.zip | |
mtd: spinand: winbond: Update the *JW chip definitions
W25N01JW and W25N02JW use a different technology with higher frequencies
supported (up to 166MHz). There is one drawback though, the slowest
READ_FROM_CACHE command cannot run above 54MHz. Because of that, we need
to set a limit for these chips on the basic READ_FROM_CACHE variant.
Duplicating this list is not a problem because these chips have DTR
support, and the list of supported variants will diverge from all the
other chips when adding support for it.
Cc: stable+noautosel@kernel.org # New feature being added
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
| -rw-r--r-- | drivers/mtd/nand/spi/winbond.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index fb6fee71bcb6..97517d495e57 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -10,6 +10,7 @@ #include <linux/device.h> #include <linux/kernel.h> #include <linux/mtd/spinand.h> +#include <linux/units.h> #define SPINAND_MFR_WINBOND 0xEF @@ -17,6 +18,14 @@ #define W25N04KV_STATUS_ECC_5_8_BITFLIPS (3 << 4) +static SPINAND_OP_VARIANTS(read_cache_dtr_variants, + 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_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), + 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)); + 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), @@ -194,7 +203,7 @@ static const struct spinand_info winbond_spinand_table[] = { SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xbc, 0x21), NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), NAND_ECCREQ(1, 512), - SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + SPINAND_INFO_OP_VARIANTS(&read_cache_dtr_variants, &write_cache_variants, &update_cache_variants), 0, @@ -223,7 +232,7 @@ static const struct spinand_info winbond_spinand_table[] = { SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xbf, 0x22), NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 2, 1), NAND_ECCREQ(1, 512), - SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + SPINAND_INFO_OP_VARIANTS(&read_cache_dtr_variants, &write_cache_variants, &update_cache_variants), 0, |