From patchwork Tue Nov 6 10:51:43 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/3] mtd nand : onfi need to be probed in 8 bits mode Date: Tue, 06 Nov 2012 00:51:43 -0000 From: Matthieu CASTET X-Patchwork-Id: 197462 Message-Id: <1352199105-30215-1-git-send-email-matthieu.castet@parrot.com> To: linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org Cc: Matthieu CASTET , dedekind1@gmail.com - NAND_CMD_READID want an address that it is not scaled on x16 device (it is always 0x20) - NAND_CMD_PARAM want 8 bits data Signed-off-by: Matthieu CASTET --- drivers/mtd/nand/nand_base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5894c2c..abeb8e9 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2851,6 +2851,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int i; int val; + /* ONFI need to be probed in 8 bits mode */ + WARN_ON(chip->options & NAND_BUSWIDTH_16); /* Try ONFI for unknown chip or LP */ chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' ||