From patchwork Mon May 4 14:09:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 245036 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Mon, 4 May 2020 22:09:02 +0800 Subject: [PATCH 13/14] mxs_nand: don't check zero count when ECC reading with randomizer In-Reply-To: <20200504140903.23602-1-peng.fan@nxp.com> References: <20200504140903.23602-1-peng.fan@nxp.com> Message-ID: <20200504140903.23602-14-peng.fan@nxp.com> From: Han Xu When enabled randomizer during ECC reading, the controller reported it's erased page. Checking zero count will cause data get modified to all 0xFF. Stop checking during randomizer to workaround this issue. Signed-off-by: Han Xu Signed-off-by: Peng Fan --- drivers/mtd/nand/raw/mxs_nand.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c index b6e65c616d..3fd21e51f2 100644 --- a/drivers/mtd/nand/raw/mxs_nand.c +++ b/drivers/mtd/nand/raw/mxs_nand.c @@ -773,8 +773,9 @@ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand, continue; if (status[i] == 0xff) { - if (is_mx6dqp() || is_mx7() || - is_mx6ul() || is_imx8() || is_imx8m()) + if (!nand_info->en_randomizer && + (is_mx6dqp() || is_mx7() || is_mx6ul() || + is_imx8() || is_imx8m())) if (readl(&bch_regs->hw_bch_debug1)) flag = 1; continue;