locking OCTOP_GP1 OTP register

[Anushree_Shetty]

Hi,

We are using imx6ull processor, we have requirement of writing to OCOTP_GP1 register only once and locking the register so that even the bit which 0 should not be changed in future.

From nxp document we found that using OCOTP_LOCK register,we can lock the OCOTP register,but we are not able write to this register from user space. 

Could please let us know if there is any way to lock the OCOTP_GP1 register after writing once from user space

Regards,

Anushree

[joanxie]

pls refer to the link as below:

"https://imxdev.gitlab.io/tutorial/Burning_eFuses_on_i.MX/"

refer to the reference manual, chapter 35.5.11 Value of OTP Bank0 Word0 (Lock controls)
(OCOTP_LOCK)

[Anushree_Shetty]

Hi Joanxie,

Thanks for the reply.

I'm not able to open the link you shared. I'm getting "page not found" as below

Anushree_Shetty_0-1694405440681.png

Regards,

Anushree

[joanxie]

just remove " in the end of link, try again

https://imxdev.gitlab.io/tutorial/Burning_eFuses_on_i.MX/