diff options
Diffstat (limited to 'drivers/misc/mxc_ocotp.c')
| -rw-r--r-- | drivers/misc/mxc_ocotp.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c index f84fe88db1..1b945e9727 100644 --- a/drivers/misc/mxc_ocotp.c +++ b/drivers/misc/mxc_ocotp.c @@ -321,6 +321,11 @@ int fuse_sense(u32 bank, u32 word, u32 *val) struct ocotp_regs *regs; int ret; + if (is_imx8mq() && is_soc_rev(CHIP_REV_2_1)) { + printf("mxc_ocotp %s(): fuse sense is disabled\n", __func__); + return -EPERM; + } + ret = prepare_read(®s, bank, word, val, __func__); if (ret) return ret; @@ -354,13 +359,17 @@ 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 |