2013-10-24 21:50:11 +08:00
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--- a/drivers/mtd/devices/Kconfig
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+++ b/drivers/mtd/devices/Kconfig
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@@ -109,6 +109,14 @@ config MTD_SPEAR_SMI
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help
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This enable SNOR support on SPEAR platforms using SMI controller
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+config M25PXX_PREFER_SMALL_SECTOR_ERASE
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+ bool "Prefer small sector erase"
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+ depends on MTD_M25P80
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+ default y
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+ help
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+ This option enables use of the small erase sectors if that is
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+ supported by the flash chip.
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+
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config MTD_SST25L
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tristate "Support SST25L (non JEDEC) SPI Flash chips"
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depends on SPI_MASTER
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--- a/drivers/mtd/devices/m25p80.c
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+++ b/drivers/mtd/devices/m25p80.c
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@@ -82,6 +82,12 @@
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#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16)
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+#ifdef CONFIG_M25PXX_PREFER_SMALL_SECTOR_ERASE
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+#define PREFER_SMALL_SECTOR_ERASE 1
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+#else
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+#define PREFER_SMALL_SECTOR_ERASE 0
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+#endif
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+
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/****************************************************************************/
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struct m25p {
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2013-12-15 01:37:14 +08:00
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@@ -1044,7 +1050,7 @@ static int m25p_probe(struct spi_device
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2013-10-24 21:50:11 +08:00
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flash->mtd._write = m25p80_write;
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/* prefer "small sector" erase if possible */
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- if (info->flags & SECT_4K) {
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+ if (PREFER_SMALL_SECTOR_ERASE && (info->flags & SECT_4K)) {
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flash->erase_opcode = OPCODE_BE_4K;
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flash->mtd.erasesize = 4096;
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} else if (info->flags & SECT_4K_PMC) {
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