How to disable JTAG Debug interface in production mode for STM32MP157x dual core

[manegb]

Hi,

I wanted to disable JTAG from production board by fusing OTP permantantly.

I am trying with BSEC registers & OTP mapping. I am unable to write to any BSEC registers & doesn't change any value from uboot.

Also tried with fuse but still same results. 

Do I need to remove any interlock first to update BSEC registers, Also, by default how JTAG is enabled?

Thanks.

Girish

[Billy OWEN]

Hi @manegb 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

Regards,

Billy