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| author | Antony Pavlov <antonynpavlov@gmail.com> | 2017-04-26 17:17:34 +0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-10-16 09:24:42 +0200 |
| commit | bdcb3b0505e785e1b3264dab5fc23539ce201fe8 (patch) | |
| tree | 12cae58ffc625329fbbca6f7e040f75f48455fb5 | |
| parent | 81d6f55f4d05c781d77751f577ed488a314b4bb9 (diff) | |
| download | barebox-bdcb3b0505e785e1b3264dab5fc23539ce201fe8.tar.gz barebox-bdcb3b0505e785e1b3264dab5fc23539ce201fe8.tar.xz | |
mtd: m25p80: make it possible to use 4K erase block
We already have the MTD_SPI_NOR_USE_4K_SECTORS option handling in C code
for 4K erase block support. Alas this 4K erase block support code
can't be used because the MTD_SPI_NOR_USE_4K_SECTORS option support
is missed in Kconfig.
This patch imports necessary Kconfig MTD_SPI_NOR_USE_4K_SECTORS option
declaration from linux v4.11-rc8.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/mtd/spi-nor/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index a84591fdd1..51cebcf35b 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -7,6 +7,19 @@ menuconfig MTD_SPI_NOR if MTD_SPI_NOR +config MTD_SPI_NOR_USE_4K_SECTORS + bool "Use small 4096 B erase sectors" + help + Many flash memories support erasing small (4096 B) sectors. Depending + on the usage this feature may provide performance gain in comparison + to erasing whole blocks (32/64 KiB). + Changing a small part of the flash's contents is usually faster with + small sectors. On the other hand erasing should be faster when using + 64 KiB block instead of 16 × 4 KiB sectors. + + Please note that some tools/drivers/filesystems may not work with + 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). + config SPI_CADENCE_QUADSPI tristate "Cadence Quad SPI controller" help |