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mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode 

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Guillaume LECERF 2010-10-26 10:26:26 +01:00 committed by David Woodhouse
parent b5d194ceae
commit fc61015f72
1 changed files with 7 additions and 0 deletions
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7
drivers/mtd/chips/cfi_util.c
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@ -75,6 +75,13 @@ int __xipram cfi_qry_mode_on(uint32_t base, struct map_info *map,
cfi_send_gen_cmd(0xAA, 0x5555, base, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, 0x2AAA, base, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x98, 0x5555, base, map, cfi, cfi->device_type, NULL);
if (cfi_qry_present(map, base, cfi))
return 1;
/* SST 39VF640xB */
cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0xAA, 0x555, base, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, 0x2AA, base, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x98, 0x555, base, map, cfi, cfi->device_type, NULL);
if (cfi_qry_present(map, base, cfi))
return 1;
/* QRY not found */