Commit 59d8a477 authored by Ye Li's avatar Ye Li
Browse files

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: default avatarYe Li <>
Tested-by: default avatarAnson Huang <>
(cherry picked from commit da95f60611e8859eba3e7ccb715fdce4d6376774)
parent 9dba7a4d
......@@ -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(&regs, bank, word, val, __func__);
if (ret)
return ret;
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