diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/spi/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/mtd/spi/spi-nor-core.c | 9 |
2 files changed, 15 insertions, 4 deletions
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index ea444436ad..f8db8e5213 100644 --- a/drivers/mtd/spi/Kconfig +++ b/drivers/mtd/spi/Kconfig @@ -95,6 +95,16 @@ config SPI_FLASH_BAR Bank/Extended address registers are used to access the flash which has size > 16MiB in 3-byte addressing. +config SPI_FLASH_UNLOCK_ALL + bool "Unlock the entire SPI flash on u-boot startup" + default y + help + Some flashes tend to power up with the software write protection + bits set. If this option is set, the whole flash will be unlocked. + + For legacy reasons, this option default to y. But if you intend to + actually use the software protection bits you should say n here. + config SF_DUAL_FLASH bool "SPI DUAL flash memory support" help diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index e16b0e1462..ef426dac02 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -2443,10 +2443,11 @@ static int spi_nor_init(struct spi_nor *nor) * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up * with the software protection bits set */ - if (JEDEC_MFR(nor->info) == SNOR_MFR_ATMEL || - JEDEC_MFR(nor->info) == SNOR_MFR_INTEL || - JEDEC_MFR(nor->info) == SNOR_MFR_SST || - nor->info->flags & SPI_NOR_HAS_LOCK) { + if (IS_ENABLED(CONFIG_SPI_FLASH_UNLOCK_ALL) && + (JEDEC_MFR(nor->info) == SNOR_MFR_ATMEL || + JEDEC_MFR(nor->info) == SNOR_MFR_INTEL || + JEDEC_MFR(nor->info) == SNOR_MFR_SST || + nor->info->flags & SPI_NOR_HAS_LOCK)) { write_enable(nor); write_sr(nor, 0); spi_nor_wait_till_ready(nor); |