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iMX6 fuse override

Question asked by Jay Smith on Feb 4, 2018
Latest reply on Feb 5, 2018 by igorpadykov

Hello.

I read in the chip manual about fuse and shadow registers, and I've also noticed the "fuse override" uboot command.

But I still have a question I couldn't understand the answer to:

If I write the wrong value to the MAC fuses by writing to /sys/fsl_otp/HW_OCOTP_MAC*, is there any way to override it with another MAC address?

(I know I can write to it again and change zero bits to ones, but is there a way to change ones to zeros, maybe by using the shadow registers?)

 

Thanks in advance.

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