From ca229bdbef29be207c8666f106acc3bf50736c05 Mon Sep 17 00:00:00 2001 From: Cheng Ming Lin Date: Mon, 9 Sep 2024 17:26:42 +0800 Subject: 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 Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20240909092643.2434479-2-linchengming884@gmail.com --- drivers/mtd/nand/spi/core.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') 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) -- cgit v1.2.3