Merge branch 'master' of git://git.denx.de/u-boot-nios

[u-boot] / drivers / mtd / spi / Kconfig

diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig
index 8b730ff3c55458b5040e5891adcdeab6012948b7..3f7433cbc214b76a7120886f858047d64b51744c 100644 (file)
--- a/drivers/mtd/spi/Kconfig
+++ b/drivers/mtd/spi/Kconfig
@@ -86,6 +86,21 @@ config SPI_FLASH_WINBOND
 
 endif
 
+config SPI_FLASH_USE_4K_SECTORS
+       bool "Use small 4096 B erase sectors"
+       depends on SPI_FLASH
+       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).
+
 config SPI_FLASH_DATAFLASH
        bool "AT45xxx DataFlash support"
        depends on SPI_FLASH && DM_SPI_FLASH