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bcm53xx: backport forgotten spi-nor change

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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 43031
This commit is contained in:
Rafał Miłecki 2014-10-22 14:34:43 +00:00
parent 2466b04a5a
commit c14e0807bd
1 changed files with 23 additions and 0 deletions
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23
target/linux/bcm53xx/patches-3.14/002-mtd-spi-nor-from-3.18.patch
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@ -104,3 +104,26 @@
nor->erase_opcode = SPINOR_OP_SE; nor->erase_opcode = SPINOR_OP_SE;
mtd->erasesize = info->sector_size; mtd->erasesize = info->sector_size;
} }
--- a/drivers/mtd/spi-nor/Kconfig
+++ b/drivers/mtd/spi-nor/Kconfig
@@ -7,6 +7,20 @@ menuconfig MTD_SPI_NOR
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).
+
config SPI_FSL_QUADSPI
tristate "Freescale Quad SPI controller"
depends on ARCH_MXC