We are using a customized board based on imx6q sabre lite board. We are not able to access the board via JTAG. When we plug the board via USB cable to PC. We see the device enumerated as HID device. We would like to know
1. what are the efuses set in the factory and what efuses have to be set by the user?
2. Is there any way to read the efuse status without using JTAG?
Solved! Go to Solution.
Hi Hemanth
recommended to check Chapter 7Configuring JTAG Tools IMX6DQ6SDLHDG and link below
Default fuse state is given in Table 8-2 IMX6DQRM
they can be read with SDK (test ocotp_test.c)
i.MX 6Series Platform SDK or with Uboot
https://community.freescale.com/docs/DOC-95458
Note: JTAG_MOD is high only in boundary scan. For normal operation JTAG_MOD should be low.
Best regards
igor
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Hi Igor,
Thanks for the reply. In our Custom board, we have the JTAG_MOD left unconnected.
We think that could be the issue why we are not able to access the board via JTAG.
Thanks
Hemanth
Hi Hemanth
recommended to check Chapter 7Configuring JTAG Tools IMX6DQ6SDLHDG and link below
Default fuse state is given in Table 8-2 IMX6DQRM
they can be read with SDK (test ocotp_test.c)
i.MX 6Series Platform SDK or with Uboot
https://community.freescale.com/docs/DOC-95458
Note: JTAG_MOD is high only in boundary scan. For normal operation JTAG_MOD should be low.
Best regards
igor
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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