From fc61015f72808f2fd83657909d02f4d29404b8c6 Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Tue, 26 Oct 2010 10:26:26 +0100 Subject: [PATCH] mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode Signed-off-by: Guillaume LECERF Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_util.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c index e503b2ca894..360525c637d 100644 --- a/drivers/mtd/chips/cfi_util.c +++ b/drivers/mtd/chips/cfi_util.c @@ -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 */ -- 2.46.0