diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-3.14/401-mtd-spi-nor-add-Kconfig-option-to-disable-4K-sectors.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-3.14/401-mtd-spi-nor-add-Kconfig-option-to-disable-4K-sectors.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.14/401-mtd-spi-nor-add-Kconfig-option-to-disable-4K-sectors.patch b/target/linux/bcm53xx/patches-3.14/401-mtd-spi-nor-add-Kconfig-option-to-disable-4K-sectors.patch new file mode 100644 index 0000000000..395b0af1d2 --- /dev/null +++ b/target/linux/bcm53xx/patches-3.14/401-mtd-spi-nor-add-Kconfig-option-to-disable-4K-sectors.patch @@ -0,0 +1,44 @@ +--- 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 small part of flash content 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 +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -987,6 +987,7 @@ int spi_nor_scan(struct spi_nor *nor, co + nor->wait_till_ready == spi_nor_wait_till_ready) + nor->wait_till_ready = spi_nor_wait_till_fsr_ready; + ++#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS + /* prefer "small sector" erase if possible */ + if (info->flags & SECT_4K) { + nor->erase_opcode = SPINOR_OP_BE_4K; +@@ -994,7 +995,9 @@ int spi_nor_scan(struct spi_nor *nor, co + } else if (info->flags & SECT_4K_PMC) { + nor->erase_opcode = SPINOR_OP_BE_4K_PMC; + mtd->erasesize = 4096; +- } else { ++ } else ++#endif ++ { + nor->erase_opcode = SPINOR_OP_SE; + mtd->erasesize = info->sector_size; + } |