From: Ye Li <ye.li@nxp.com>
Date: Fri, 5 Jan 2018 02:55:03 +0000 (-0600)
Subject: MLK-17345 mxc_ocotp: Update redundancy banks for mx7ulp B0
X-Git-Tag: rel_imx_4.9.88_2.0.0_ga~105
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=af901cae281a617063559f60761ad4e912fccd5f;p=u-boot.git

MLK-17345 mxc_ocotp: Update redundancy banks for mx7ulp B0

On mx7ulp B0, beside bank 0 and 1, the fuse bank 9, 10, 28 are changed to
Redundancy mode not ECC, so they can support to program different bits of
a word in multiple times.

Signed-off-by: Ye Li <ye.li@nxp.com>
---

diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c
index 9adf0a804a..42f2d399c8 100644
--- a/drivers/misc/mxc_ocotp.c
+++ b/drivers/misc/mxc_ocotp.c
@@ -356,13 +356,16 @@ static int prepare_write(struct ocotp_regs **regs, u32 bank, u32 word,
 
 	/* Only bank 0 and 1 are redundancy mode, others are ECC mode */
 	if (bank != 0 && bank != 1) {
-		ret = fuse_sense(bank, word, &val);
-		if (ret)
-			return ret;
-
-		if (val != 0) {
-			printf("mxc_ocotp: The word has been programmed, no more write\n");
-			return -EPERM;
+		if ((soc_rev() < CHIP_REV_2_0) ||
+		    ((soc_rev() >= CHIP_REV_2_0) && bank != 9 && bank != 10 && bank != 28)) {
+			ret = fuse_sense(bank, word, &val);
+			if (ret)
+				return ret;
+
+			if (val != 0) {
+				printf("mxc_ocotp: The word has been programmed, no more write\n");
+				return -EPERM;
+			}
 		}
 	}
 #endif