mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2025-08-13 18:56:59 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity
ac3b51ef72
u-boot/drivers/mtd/spi
History
Prasad Kummari f59cb6a697 Revert "mtd: spi-nor: Remove recently added SST special case" 
SST(sst26wf016) flashes have multiple erase block sizes, including
8 KB, 32 KB, and 64 KB. Since a 64 KB sector erase cannot be performed
on all blocks, the 4 KB sector erase command should be used instead.
Enabling the SPI_FLASH_USE_4K_SECTORS configuration allows the use of
4 KB sector erases, but it may increase the erase operation time for large
memory flashes.

This reverts commit 34cd4a72fb

MEMORY ORGANIZATION:
The SST26WF016B/016BA SQI memory array is organized
in uniform, 4 KByte erasable sectors with the following
erasable blocks: eight 8 KByte parameter, two
32 KByte overlay, and thirty 64 KByte overlay blocks.
See Figure 3-1.

Top of Memory Block
┌──────────┐
│  8 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│ 32 KByte │
├──────────┤
│ 64 KByte │
├──────────┤
│ 64 KByte │
├──────────┤
│ 64 KByte │
├──────────┤
│ 32 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│  8 KByte │
├──────────┤
│  8 KByte │
└──────────┘
Bottom of Memory Block

      ┌────────────────────────────────┐
      │            64 KByte            │
      ├────────────────────────────────┤
      │            64 KByte            │
      └────────────────────────────────┘

      Expanded View:
      ┌──────┐ ┌──────┐ ┌──────┐ ┌──────┐
      │ 4 KB │ │ 4 KB │ │ 4 KB │ │ 4 KB │
      ├──────┤ ├──────┤ ├──────┤ ├──────┤
      │  . .  .  (continues) . .  .   │
      └──────┘ └──────┘ └──────┘ └──────┘

2 Sectors for 8 KByte blocks
8 Sectors for 32 KByte blocks
16 Sectors for 64 KByte blocks

Link: https://ww1.microchip.com/downloads/en/DeviceDoc/20005013D.pdf
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
2025-04-29 15:29:00 -06:00
..
fsl_espi_spl.c Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet" 2024-05-20 13:35:03 -06:00
Kconfig mtd: spi-nor-ids: Add Puya Semiconductor chips description 2024-10-24 18:08:51 +05:30
Makefile global: Rename SPL_TPL_ to PHASE_ 2024-10-11 11:44:48 -06:00
sandbox.c spi: spi-uclass: Read chipselect and restrict capabilities 2024-10-09 09:01:54 -06:00
sf_bootdev.c Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet" 2024-05-20 13:35:03 -06:00
sf_dataflash.c drivers: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD 2024-10-11 11:44:48 -06:00
sf_internal.h drivers: mtd: Remove duplicate newlines 2024-07-22 10:53:05 -06:00
sf_mtd.c Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet" 2024-05-20 13:35:03 -06:00
sf_probe.c Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet" 2024-05-20 13:35:03 -06:00
sf-uclass.c drivers: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD 2024-10-11 11:44:48 -06:00
spi-nor-core.c Revert "mtd: spi-nor: Remove recently added SST special case" 2025-04-29 15:29:00 -06:00
spi-nor-ids.c Merge patch series "Add support for Infineon S28HL256T and S28HL02GT" 2025-04-29 15:27:40 -06:00
spi-nor-tiny.c mtd: spi-nor-tiny: annotate switch/case fallthrough 2025-04-08 16:23:51 -06:00