[PATCH] Add JEDEC ID table entries for additional ISSI SPI-NOR devices.

Jeffrey Yu jeyu at issi.com
Thu May 21 04:29:33 CEST 2026


Add JEDEC ID table entries for additional ISSI SPI-NOR 
 devices.

These parts previously not yet supported.
With these entries, Linux software can match the device by JEDEC ID
and use the existing ISSI SPI-NOR device handling.

Newly added devices include:
  - IS25WX256  (JEDEC 0x9d5b19)
    https://www.issi.com/WW/pdf/25LX-WX256-128.pdf
  - IS25LX256  (JEDEC 0x9d5a19)
    https://www.issi.com/WW/pdf/25LX-WX256-128.pdf
  - IS25WX512M   (JEDEC 0x9d5b1a)
    https://www.issi.com/WW/pdf/25LX-WX512M.pdf
  - IS25LX512M   (JEDEC 0x9d5a1a)
    https://www.issi.com/WW/pdf/25LX-WX512M.pdf
  - IS25WX01G   (JEDEC 0x9d5b1b)
    https://www.issi.com/WW/pdf/25LX-WX01G.pdf
  - IS25LX01G   (JEDEC 0x9d5a1b)
    https://www.issi.com/WW/pdf/25LX-WX01G.pdf

Signed-off-by: Jeffrey Y <jeyu at issi.com>
---
 drivers/mtd/spi/spi-nor-ids.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c
index c0fa98424aa..039821b8175 100644
--- a/drivers/mtd/spi/spi-nor-ids.c
+++ b/drivers/mtd/spi/spi-nor-ids.c
@@ -301,6 +301,18 @@ const struct flash_info spi_nor_ids[] = {
 			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_HAS_TB) },
 	{ INFO("is25wp02gj",  0x9d7022, 0, 64 * 1024, 4096,
 			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_HAS_TB) },
+	{ INFO("is25wx256",  0x9d5b19, 0, 128 * 1024, 256,
+			SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES) },
+	{ INFO("is25lx256",  0x9d5a19, 0, 128 * 1024, 256,
+			SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES) },
+	{ INFO("is25wx512m",  0x9d5b1a, 0, 64 * 1024, 1024,
+			SECT_4K | USE_FSR | SPI_NOR_4B_OPCODES | SPI_NOR_HAS_TB) },
+	{ INFO("is25lx512m",  0x9d5a1a, 0, 64 * 1024, 1024,
+			SECT_4K | USE_FSR | SPI_NOR_4B_OPCODES | SPI_NOR_HAS_TB) },
+	{ INFO("is25wx01g",  0x9d5b1b, 0, 64 * 1024, 2048,
+			SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES) },
+	{ INFO("is25lx01g",  0x9d5a1b, 0, 64 * 1024, 2048,
+			SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES) },
 #endif
 #ifdef CONFIG_SPI_FLASH_MACRONIX	/* MACRONIX */
 	/* Macronix */
-- 
2.43.0



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