Julian Oes 7e46d282eb drivers/mtd: Add W25N SPI NAND flash driver ...

Add MTD driver for Winbond W25N series SPI NAND flash.

Currently supports W25N01GV (1Gbit/128MB).

Features:
- Standard SPI interface with configurable frequency (up to 104 MHz)
- Hardware ECC enabled by default
- Block erase with sleep-based wait (releases SPI bus)
- Page read/write with busy-wait for fast operations

Limitations:
- No bad block management (BBM). Factory bad blocks and runtime bad
  blocks are not tracked.
- No bad block table (BBT) scanning at initialization.
- No Quad SPI support (standard SPI only).
- No access to spare area (64 bytes/page) or OTP region.

Tested using:
- Board with STM32H743
- W25N01GV on SPI at 96 MHz with DMA enabled
- Flash mounted using littlefs
- Tested using sdbench:
  - Sequential write speed of 1760 KB/s
  - Sequential read speed of 4900 KB/s

Signed-off-by: Julian Oes <julian@oes.ch>

2025-12-19 10:00:33 +08:00

..

.gitignore

drivers/mtd: introduce nvblk

2025-08-06 01:53:56 +08:00

at24xx.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

at25.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

at25ee.c

mtd/at25ee: Use eeprom/spi_xx25xx internally

2025-12-17 19:03:54 +01:00

at45db.c

driver/mtd/at45db.c: write to page without built-in erase

2025-03-26 10:29:12 +08:00

cfi.c

drivers/mtd: cfi-flash driver

2025-02-11 17:23:44 +08:00

cfi.h

drivers/mtd: cfi-flash driver

2025-02-11 17:23:44 +08:00

CMakeLists.txt

drivers/mtd: Add W25N SPI NAND flash driver

2025-12-19 10:00:33 +08:00

dhara.c

…

filemtd.c

…

ftl.c

drivers/fs: Control the behavior of FTL by passing oflags during the open process.

2025-07-16 14:11:41 +08:00

gd5f.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

gd25.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

gd55.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

hamming.c

…

is25xp.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

Kconfig

drivers/mtd: Add W25N SPI NAND flash driver

2025-12-19 10:00:33 +08:00

m25px.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

Make.defs

drivers/mtd: Add W25N SPI NAND flash driver

2025-12-19 10:00:33 +08:00

mtd_cfi.c

drivers/mtd/mtd_cfi: Add MTDIOC_ERASESTATE

2025-03-28 19:19:35 +08:00

mtd_config_fs.c

mtd/nvs: Save events if not waited

2025-09-10 10:54:39 -03:00

mtd_config.c

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mtd_modeltab.c

…

mtd_nand.c

…

mtd_nandecc.c

…

mtd_nandmodel.c

…

mtd_nandram.c

…

mtd_nandscheme.c

…

mtd_nandwrapper.c

…

mtd_onfi.c

style: fix spelling in code comments and strings

2025-05-23 10:48:41 +08:00

mtd_partition.c

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mtd_progmem.c

…

mtd_rwbuffer.c

drivers/mtd: fix compile warning

2025-06-03 17:33:14 +08:00

mx25lx.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

mx25rxx.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

mx35.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

n25qxxx.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

nullmtd.c

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nvblk.c

drivers/mtd: introduce nvblk

2025-08-06 01:53:56 +08:00

rammtd.c

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ramtron.c

driver/mtd: ramtron multi-device spi bus support

2025-03-26 19:26:01 +08:00

rpmsgmtd_server.c

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rpmsgmtd.c

style: fix spelling in code comments and strings

2025-05-23 10:48:41 +08:00

rpmsgmtd.h

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s25fl1.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

sector512.c

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skeleton.c

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smart.c

style: fix spelling in code comments and strings

2025-05-23 10:48:41 +08:00

sst25.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

sst25xx.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

sst26.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

sst39vf.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00

w25.c

drivers/mtd/w25: support custom SPI transfers delay

2025-11-27 22:27:40 +08:00

w25n.c

drivers/mtd: Add W25N SPI NAND flash driver

2025-12-19 10:00:33 +08:00

w25qxxxjv.c

sched/sleep: replace all Signal-based sleep implement to Scheduled sleep

2025-10-17 14:05:02 +08:00