From c08293893aadca182b52ef96d3c2b1700282f0f2 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 3 Nov 2017 09:53:54 +0100 Subject: kernel: add support for limiting 4K erase sector support based on flash chip size Some targets need 4K sectors for small flash chips (e.g. some routerboards, where the entire chip is just one "erase block"), whereas on other devices 4K sectors lead to horrible flash erase/write performance. Set the default limit in the generic kernel configuration to 4 MiB to ensure that all new platforms don't use 4K sectors for bigger flash chips. On all existing targets use 16 MiB for now to avoid regressions. They will be changed individually in follow-up commits. Signed-off-by: Felix Fietkau --- target/linux/ar71xx/mikrotik/config-default | 1 + 1 file changed, 1 insertion(+) (limited to 'target/linux/ar71xx') diff --git a/target/linux/ar71xx/mikrotik/config-default b/target/linux/ar71xx/mikrotik/config-default index 42f9882bb2..284274e41f 100644 --- a/target/linux/ar71xx/mikrotik/config-default +++ b/target/linux/ar71xx/mikrotik/config-default @@ -232,6 +232,7 @@ CONFIG_MTD_NAND_RB750=y CONFIG_MTD_NAND_RB91X=y # CONFIG_MTD_REDBOOT_PARTS is not set CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 # CONFIG_MTD_SPLIT_EVA_FW is not set # CONFIG_MTD_SPLIT_TPLINK_FW is not set # CONFIG_MTD_TPLINK_PARTS is not set -- cgit v1.2.3