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authorGuillaume LECERF <glecerf@gmail.com>2010-10-26 10:26:26 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-10-26 11:37:26 +0100
commitfc61015f72808f2fd83657909d02f4d29404b8c6 (patch)
tree90b744d65b61d55a1f8823b980f3ba84a9a858e6 /drivers/mtd/chips
parentb5d194ceaeffce637e88be153794d1c963738ea9 (diff)
downloadlinux-fc61015f72808f2fd83657909d02f4d29404b8c6.tar.bz2
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>
Diffstat (limited to 'drivers/mtd/chips')
-rw-r--r--drivers/mtd/chips/cfi_util.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c
index e503b2ca894d..360525c637d2 100644
--- a/drivers/mtd/chips/cfi_util.c
+++ b/drivers/mtd/chips/cfi_util.c
@@ -77,6 +77,13 @@ int __xipram cfi_qry_mode_on(uint32_t base, struct map_info *map,
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 */
return 0;
}