diff options
| author | Ye Li <ye.li@nxp.com> | 2018-09-03 00:53:20 -0700 |
|---|---|---|
| committer | Ye Li <ye.li@nxp.com> | 2018-09-04 19:11:50 -0700 |
| commit | 59d8a4772ff2163ed7e446d2c486e62849087242 (patch) | |
| tree | 677975b20eaea42bd28dca3d91db9431cb7c1593 | |
| parent | 9dba7a4d4387278b0452f2fc93978777d903abb1 (diff) | |
MLK-19433-3 mxc_ocotp: Disable fuse sense for imx8mq B1
On iMX8MQ Rev B1, reading from fuse box is not allowed. The
OCOTP_READ_FUSE_DATA register is tied to magic number 0xff0055aa
for chip rev. So u-boot has to disable the fuse sense function for it.
Signed-off-by: Ye Li <ye.li@nxp.com>
Tested-by: Anson Huang <Anson.Huang@nxp.com>
(cherry picked from commit da95f60611e8859eba3e7ccb715fdce4d6376774)
| -rw-r--r-- | drivers/misc/mxc_ocotp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c index 42f2d399c8..fe9f16947d 100644 --- a/drivers/misc/mxc_ocotp.c +++ b/drivers/misc/mxc_ocotp.c @@ -323,6 +323,11 @@ 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; |