--- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -109,6 +109,14 @@ config MTD_SPEAR_SMI help This enable SNOR support on SPEAR platforms using SMI controller +config M25PXX_PREFER_SMALL_SECTOR_ERASE + bool "Prefer small sector erase" + depends on MTD_M25P80 + default y + help + This option enables use of the small erase sectors if that is + supported by the flash chip. + config MTD_SST25L tristate "Support SST25L (non JEDEC) SPI Flash chips" depends on SPI_MASTER --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -76,6 +76,12 @@ #define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16) +#ifdef CONFIG_M25PXX_PREFER_SMALL_SECTOR_ERASE +#define PREFER_SMALL_SECTOR_ERASE 1 +#else +#define PREFER_SMALL_SECTOR_ERASE 0 +#endif + /****************************************************************************/ struct m25p { @@ -1021,7 +1027,7 @@ static int m25p_probe(struct spi_device flash->mtd._write = m25p80_write; /* prefer "small sector" erase if possible */ - if (info->flags & SECT_4K) { + if (PREFER_SMALL_SECTOR_ERASE && (info->flags & SECT_4K)) { flash->erase_opcode = OPCODE_BE_4K; flash->mtd.erasesize = 4096; } else if (info->flags & SECT_4K_PMC) {