[U-Boot] [PATCH 1/2] mxc_ocotp: Update redundancy banks for mx7ulp B0

Peng Fan
2019-04-17T09:41:20Z

From: Ye Li <ye.li@nxp.com>

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>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/misc/mxc_ocotp.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c
index f84fe88db1..33ea31135c 100644
--- a/drivers/misc/mxc_ocotp.c
+++ b/drivers/misc/mxc_ocotp.c
@@ -354,13 +354,17 @@ 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
--
2.16.4