linux-kernel - [PATCH 3/4] mtd: rawnand: cadence: change bad block marker size

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Message-ID: <1581328530-29966-3-git-send-email-piotrs@cadence.com>
Date:   Mon, 10 Feb 2020 10:55:27 +0100
From:   Piotr Sroka <piotrs@...ence.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Kazuhiro Kasai <kasai.kazuhiro@...ionext.com>,
        Piotr Sroka <piotrs@...ence.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/4] mtd: rawnand: cadence: change bad block marker size

Increase bad block marker size from one byte to two bytes.
Bad block marker is handled by skip bytes feature of HPNFC.
Controller excpects this value to be an even number.

Signed-off-by: Piotr Sroka <piotrs@...ence.com>
---
 drivers/mtd/nand/raw/cadence-nand-controller.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c
index 2ebfd0934739..5c1bbb05ab51 100644
--- a/drivers/mtd/nand/raw/cadence-nand-controller.c
+++ b/drivers/mtd/nand/raw/cadence-nand-controller.c
@@ -2612,12 +2612,9 @@ int cadence_nand_attach_chip(struct nand_chip *chip)
 	chip->options |= NAND_NO_SUBPAGE_WRITE;
 
 	cdns_chip->bbm_offs = chip->badblockpos;
-	if (chip->options & NAND_BUSWIDTH_16) {
-		cdns_chip->bbm_offs &= ~0x01;
-		cdns_chip->bbm_len = 2;
-	} else {
-		cdns_chip->bbm_len = 1;
-	}
+	cdns_chip->bbm_offs &= ~0x01;
+	/* this value should be even number */
+	cdns_chip->bbm_len = 2;
 
 	ret = nand_ecc_choose_conf(chip,
 				   &cdns_ctrl->ecc_caps,
-- 
2.17.1