[PATCH v2 03/23] mtd: spi-nor: winbond: Properly document the chip names
From: Miquel Raynal
Date: Fri Jul 31 2026 - 08:06:53 EST
While the .name entry is a legacy field, is highly imprecise, and even
wrong sometimes due to ID reuse, it is part of the sysfs ABI, we cannot
remove it for existing chips. However, we can double the entry with the
now usual comment with the newly instated naming scheme to indicate what
chips are covered by each entry.
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
I've been focusing on several chip families, but not all of them. I do
not have enough information about the oldest chips at the moment to
cleanup *all* IDs, but I am nevertheless trying to make a major cleaning
step here.
---
drivers/mtd/spi-nor/winbond.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 03e59ff3228f..3e8e89058b8c 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -218,16 +218,19 @@ static const struct flash_info winbond_nor_parts[] = {
.size = SZ_1M,
.no_sfdp_flags = SECT_4K,
}, {
+ /* W25Q32JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x16),
.name = "w25q32",
.size = SZ_4M,
.no_sfdp_flags = SECT_4K,
}, {
+ /* W25Q64JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x17),
.name = "w25q64",
.size = SZ_8M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q128JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x18),
/* Flavors w/ and w/o SFDP. */
.name = "w25q128",
@@ -236,18 +239,20 @@ static const struct flash_info winbond_nor_parts[] = {
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.fixups = &w25q128_fixups,
}, {
+ /* W25Q256JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x19),
.name = "w25q256",
.size = SZ_32M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.fixups = &w25q256_fixups,
}, {
+ /* W25Q512JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x20),
.name = "w25q512jvq",
.size = SZ_64M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q01JV */
+ /* W25Q01JV-Q/N */
.id = SNOR_ID(0xef, 0x40, 0x21),
.fixups = &winbond_nor_multi_die_fixups,
}, {
@@ -285,52 +290,60 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q128FW-G/Q, W25Q128JW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x18),
.name = "w25q128fw",
.size = SZ_16M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q256JW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x19),
.name = "w25q256jw",
.size = SZ_32M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q512NW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x20),
.name = "w25q512nwq",
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
- /* W25Q01NW-Q */
+ /* W25Q01NW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x21),
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 |
SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP,
.fixups = &winbond_rdcr_fixup,
}, {
+ /* W25Q16JV-M */
.id = SNOR_ID(0xef, 0x70, 0x15),
.name = "w25q16jv-im/jm",
.size = SZ_2M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q32JV-M */
.id = SNOR_ID(0xef, 0x70, 0x16),
.name = "w25q32jv",
.size = SZ_4M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q64JV-M */
.id = SNOR_ID(0xef, 0x70, 0x17),
.name = "w25q64jvm",
.size = SZ_8M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K,
}, {
+ /* W25Q128JV-M */
.id = SNOR_ID(0xef, 0x70, 0x18),
.name = "w25q128jv",
.size = SZ_16M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q256JV-M */
.id = SNOR_ID(0xef, 0x70, 0x19),
.name = "w25q256jvm",
}, {
@@ -343,6 +356,7 @@ static const struct flash_info winbond_nor_parts[] = {
.size = SZ_64M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q32JW-M */
.id = SNOR_ID(0xef, 0x80, 0x16),
.name = "w25q32jwm",
.size = SZ_4M,
@@ -350,24 +364,28 @@ static const struct flash_info winbond_nor_parts[] = {
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
+ /* W25Q64JW-M */
.id = SNOR_ID(0xef, 0x80, 0x17),
.name = "w25q64jwm",
.size = SZ_8M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q128JW-M */
.id = SNOR_ID(0xef, 0x80, 0x18),
.name = "w25q128jwm",
.size = SZ_16M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q256JW-M */
.id = SNOR_ID(0xef, 0x80, 0x19),
.name = "w25q256jwm",
.size = SZ_32M,
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q512NW-M */
.id = SNOR_ID(0xef, 0x80, 0x20),
.name = "w25q512nwm",
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
--
2.54.0