[PATCH 13/30] mtd: spi-nor: winbond: W25Q128JV-Q/N: Fill locking information
From: Miquel Raynal
Date: Fri May 29 2026 - 11:37:29 EST
The SFDP table does not advertize the CMP locking capabilities of the
device, flag it.
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
$ flash_lock -u /dev/mtd0
$ flash_lock -l /dev/mtd0 $ss $all_but_one # all but the first
$ show_sectors
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 1
00040000-00ffffff | locked | 63
$ flash_lock -u /dev/mtd0 $ss $(($ss / $bs)) # all but the two first
$ show_sectors
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | unlocked | 2
00080000-00ffffff | locked | 62
$ flash_lock -u /dev/mtd0
$ flash_lock -l /dev/mtd0 0 $all_but_one # same from the other side
$ show_sectors
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | locked | 63
00fc0000-00ffffff | unlocked | 1
$ flash_lock -u /dev/mtd0 $(($size - (2 * $ss))) $(($ss / $bs)) # all but two
$ show_sectors
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | locked | 62
00f80000-00ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 979ad8bacae2..3eb3f32e8b22 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -210,7 +210,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x40, 0x18),
/* Flavors w/ and w/o SFDP. */
.size = SZ_16M,
- .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+ .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.fixups = &w25q128_fixups,
}, {
--
2.53.0