From: Han Xu <han.xu@nxp.com>
Date: Mon, 4 May 2020 14:09:02 +0000 (+0800)
Subject: mxs_nand: don't check zero count when ECC reading with randomizer
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=f7bb012ab7e19d3ede6c0e9a39edd6a37bd598ff;p=u-boot.git

mxs_nand: don't check zero count when ECC reading with randomizer

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 <han.xu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

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;