Search

Technical Discussion Group Forum

This forum is provided for user discussion. While Beacon EmbeddedWorks support staff and engineers participate, Beacon EmbeddedWorks does not guarantee the accuracy of all information within in the Technical Discussion Group (TDG).

The "Articles" forums provide brief Articles written by Beacon EmbeddedWorks engineers that address the most frequently asked technical questions.

To receive email notifications when updates are posted for a Beacon EmbeddedWorks product download, please subscribe to the TDG Forum of interest.

TDG Forum

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 17 Oct 2022 01:10 PM by  Adam Ford
JTAG
 1 Replies
Sort:
You are not authorized to post a reply.
Author Messages
John Woods
New Member
New Member
Posts:2


--
13 Oct 2022 11:54 AM

    I'm trying to disable the JTAG for production units but it is not clear from the TRM how to do this. I've tried disabling via

    CM_CLKEN_PLL(PWRDN_EMU_CORE:12) = 1

    CM_CLKEN_PLL(PWRDN_EMU_PERIPH:31) = 1

    via U-boot but openocd still connects to the SOM/JTAG.

     

    Adam Ford
    Advanced Member
    Advanced Member
    Posts:794


    --
    17 Oct 2022 01:10 PM
    The DM3730 is very similar to the OMAP35, and this is stating it's not possible to disable the JTAG:

    https://e2e.ti.com/support/processors-group/processors/f/processors-forum/948220/omap3530-jtag-disabled

    I looked at the AM335X which is slightly newer, and it states something similar:
    https://e2e.ti.com/support/processors-group/processors/f/processors-forum/383248/methods-to-disable-jtag-interface-from-software-on-beaglebone-black

    You are not authorized to post a reply.