diff options
| author | Cheng Ming Lin <chengminglin@mxic.com.tw> | 2024-09-09 12:26:42 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2024-09-09 12:52:06 +0300 |
| commit | ca229bdbef29be207c8666f106acc3bf50736c05 (patch) | |
| tree | 2398548ac3c8dca7b25a8c157d1bd68b69ea652b /drivers/mtd | |
| parent | d53c35931b95b707df3b6cff061ff975843837d5 (diff) | |
| download | linux-ca229bdbef29be207c8666f106acc3bf50736c05.tar.xz | |
mtd: spinand: Add support for setting plane select bits
Add two flags for inserting the Plane Select bit into the column
address during the write_to_cache and the read_from_cache operation.
Add the SPINAND_HAS_PROG_PLANE_SELECT_BIT flag for serial NAND flash
that require inserting the Plane Select bit into the column address
during the write_to_cache operation.
Add the SPINAND_HAS_READ_PLANE_SELECT_BIT flag for serial NAND flash
that require inserting the Plane Select bit into the column address
during the read_from_cache operation.
Signed-off-by: Cheng Ming Lin <chengminglin@mxic.com.tw>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240909092643.2434479-2-linchengming884@gmail.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/spi/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index b5c6d755ade1..4d76f9f71a0e 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -408,6 +408,9 @@ static int spinand_read_from_cache_op(struct spinand_device *spinand, else rdesc = spinand->dirmaps[req->pos.plane].rdesc_ecc; + if (spinand->flags & SPINAND_HAS_READ_PLANE_SELECT_BIT) + column |= req->pos.plane << fls(nanddev_page_size(nand)); + while (nbytes) { ret = spi_mem_dirmap_read(rdesc, column, nbytes, buf); if (ret < 0) @@ -489,6 +492,9 @@ static int spinand_write_to_cache_op(struct spinand_device *spinand, else wdesc = spinand->dirmaps[req->pos.plane].wdesc_ecc; + if (spinand->flags & SPINAND_HAS_PROG_PLANE_SELECT_BIT) + column |= req->pos.plane << fls(nanddev_page_size(nand)); + while (nbytes) { ret = spi_mem_dirmap_write(wdesc, column, nbytes, buf); if (ret < 0) |