Added CONFIG_MTD_SPI_NOR_USE_4K_SECTORS kconfig entry
Reviewed-by: Simon Glass sjg@chromium.org Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/mtd/spi-nor/Kconfig | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index 130b0a4..40cd5ba 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -12,3 +12,21 @@ menuconfig MTD_SPI_NOR as a common core framework between the generic SPI controller drivers vs SPI-NOR controller drivers for SPI-NOR device access. Note that from SPI-NOR core to SPI drivers there should be an interface layer. + +if MTD_SPI_NOR + +config MTD_SPI_NOR_USE_4K_SECTORS + bool "Use small 4096 B erase sectors" + default y + 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). + +endif # MTD_SPI_NOR