diff options
Diffstat (limited to 'target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch')
| -rw-r--r-- | target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch b/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch deleted file mode 100644 index 0f4ea32688..0000000000 --- a/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch +++ /dev/null @@ -1,56 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Sat, 4 Nov 2017 07:40:23 +0100 -Subject: [PATCH] mtd: spi-nor: support limiting 4K sectors support based on - flash size - -Some devices need 4K sectors to be able to deal with small flash chips. -For instance, w25x05 is 64 KiB in size, and without 4K sectors, the -entire chip is just one erase block. -On bigger flash chip sizes, using 4K sectors can significantly slow down -many operations, including using a writable filesystem. There are several -platforms where it makes sense to use a single kernel on both kinds of -devices. - -To support this properly, allow configuring an upper flash chip size -limit for 4K sectors support. - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - ---- a/drivers/mtd/spi-nor/Kconfig -+++ b/drivers/mtd/spi-nor/Kconfig -@@ -39,6 +39,17 @@ config SPI_ASPEED_SMC - and support for the SPI flash memory controller (SPI) for - the host firmware. The implementation only supports SPI NOR. - -+config MTD_SPI_NOR_USE_4K_SECTORS_LIMIT -+ int "Maximum flash chip size to use 4K sectors on (in KiB)" -+ depends on MTD_SPI_NOR_USE_4K_SECTORS -+ default "4096" -+ help -+ There are many flash chips that support 4K sectors, but are so large -+ that using them significantly slows down writing large amounts of -+ data or using a writable filesystem. -+ Any flash chip larger than the size specified in this option will -+ not use 4K sectors. -+ - config SPI_ATMEL_QUADSPI - tristate "Atmel Quad SPI Controller" - depends on ARCH_AT91 || (ARM && COMPILE_TEST && !ARCH_EBSA110) ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -2561,10 +2561,12 @@ static int spi_nor_select_erase(struct s - - #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS - /* prefer "small sector" erase if possible */ -- if (info->flags & SECT_4K) { -+ if ((info->flags & SECT_4K) && (mtd->size <= -+ CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) { - nor->erase_opcode = SPINOR_OP_BE_4K; - mtd->erasesize = 4096; -- } else if (info->flags & SECT_4K_PMC) { -+ } else if ((info->flags & SECT_4K_PMC) && (mtd->size <= -+ CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) { - nor->erase_opcode = SPINOR_OP_BE_4K_PMC; - mtd->erasesize = 4096; - } else |