diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-06-18 10:48:00 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-06-18 11:18:45 +0200 |
| commit | dba90f5a79c13936de4273a19e67908a0c296afe (patch) | |
| tree | d95ce6c65b5a04984da54c1a645f0b3cd0b9835f /include/linux | |
| parent | 29384bbb1a2a5926f97b8cbe469081e7a1770dea (diff) | |
mtd: spinand: winbond: Prevent unsupported frequencies on dual/quad I/O variants
Dual and quad capable chips natively support dual and quad I/O variants
at up to 104MHz (1-2-2 and 1-4-4 operations). Reaching the maximum speed
of 166MHz is theoretically possible (while still unsupported in the
field) by adding a few more dummy cycles. Let's be accurate and clearly
state this limit.
Setting a maximum frequency implies adding the frequency parameter to
the macro, which is done using a variadic argument to avoid impacting
all the other drivers which already make use of this macro.
Fixes: 1ea808b4d15b ("mtd: spinand: winbond: Update the *JW chip definitions")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mtd/spinand.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 811a0f356315..15eaa09da998 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -113,11 +113,12 @@ SPI_MEM_DTR_OP_DATA_IN(len, buf, 2), \ SPI_MEM_OP_MAX_FREQ(freq)) -#define SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(addr, ndummy, buf, len) \ +#define SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(addr, ndummy, buf, len, ...) \ SPI_MEM_OP(SPI_MEM_OP_CMD(0xbb, 1), \ SPI_MEM_OP_ADDR(2, addr, 2), \ SPI_MEM_OP_DUMMY(ndummy, 2), \ - SPI_MEM_OP_DATA_IN(len, buf, 2)) + SPI_MEM_OP_DATA_IN(len, buf, 2), \ + SPI_MEM_OP_MAX_FREQ(__VA_ARGS__ + 0)) #define SPINAND_PAGE_READ_FROM_CACHE_3A_1S_2S_2S_OP(addr, ndummy, buf, len) \ SPI_MEM_OP(SPI_MEM_OP_CMD(0xbb, 1), \ @@ -151,11 +152,12 @@ SPI_MEM_DTR_OP_DATA_IN(len, buf, 4), \ SPI_MEM_OP_MAX_FREQ(freq)) -#define SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(addr, ndummy, buf, len) \ +#define SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(addr, ndummy, buf, len, ...) \ SPI_MEM_OP(SPI_MEM_OP_CMD(0xeb, 1), \ SPI_MEM_OP_ADDR(2, addr, 4), \ SPI_MEM_OP_DUMMY(ndummy, 4), \ - SPI_MEM_OP_DATA_IN(len, buf, 4)) + SPI_MEM_OP_DATA_IN(len, buf, 4), \ + SPI_MEM_OP_MAX_FREQ(__VA_ARGS__ + 0)) #define SPINAND_PAGE_READ_FROM_CACHE_3A_1S_4S_4S_OP(addr, ndummy, buf, len) \ SPI_MEM_OP(SPI_MEM_OP_CMD(0xeb, 1), \ |