From 12952374df8452d90f2afc9ef1a7c96fa049bfbe Mon Sep 17 00:00:00 2001 From: Krzysztof Mazur Date: Fri, 22 Feb 2013 12:03:39 +0100 Subject: [PATCH] mtd: m25p80: fix SST25VF064C write support The SST25VF064C uses standard page write command and does not support SST byte programming used in other SST chips. Signed-off-by: Krzysztof Mazur --- drivers/mtd/devices/m25p80.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index a1a7295..aeca560 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -594,6 +594,7 @@ struct flash_info { u16 flags; #define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */ #define M25P_NO_ERASE 0x02 /* No erase command needed */ +#define SST_WRITE 0x04 /* use SST byte programming */ }; #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ @@ -680,15 +681,15 @@ static const struct spi_device_id m25p_ids[] = { { "s25fl064k", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, /* SST -- large erase sizes are "overlays", "sectors" are 4K */ - { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K) }, - { "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K) }, - { "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K) }, - { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K) }, + { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) }, + { "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) }, + { "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K | SST_WRITE) }, + { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K | SST_WRITE) }, { "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128, SECT_4K) }, - { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K) }, - { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K) }, - { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K) }, - { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K) }, + { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K | SST_WRITE) }, + { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K | SST_WRITE) }, + { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K | SST_WRITE) }, + { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) }, /* ST Microelectronics -- newer production may have feature updates */ { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) }, @@ -887,7 +888,7 @@ static int __devinit m25p_probe(struct spi_device *spi) flash->mtd._read = m25p80_read; /* sst flash chips use AAI word program */ - if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) + if (info->flags & SST_WRITE) flash->mtd._write = sst_write; else flash->mtd._write = m25p80_write; -- 1.8.1