IMX8MP NVMEM WRITE DOES NOT WORK

[omar_aberkan]

root@0030D629BD6B:/tmp# dmesg | grep ocotp                                  
[ 4734.504139] imx_ocotp 30350000.ocotp-ctrl: failed write to locked region

root@0030D629BD6B:/tmp# ls -l /sys/bus/nvmem/devices/imx-ocotp0/nvmem  
-rw-r--r-- 1 root root 0 Feb  1 18:48 /sys/bus/nvmem/devices/imx-ocotp0/nvmem

As you can see nvmem write is disabled on the IMX8MP. (release imx_5.4.70_2.3.0)

How can i enable it?

[Zhiming_Liu]

Please test on L5.10.72

[omar_aberkan]

Can you provide a patch or the commit where this is fixed? Upgrading is not possible for me at the moment.