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imx6 boot fail for OTP - imxotp and HW_OCOTP_CFG

Question asked by tracy zhang on Jan 22, 2018
Latest reply on Jan 22, 2018 by tracy zhang

         Please help me to save the main board.
The main boards I use are imx6q, kernel 3.0.35, Android 4.4.2
I use the fuse mechanism to prepare for the production of the factory.
echo 0x00005860 >/sys/fsl_otp/HW_OCOTP_CFG4
echo 0x00000010 >/sys/fsl_otp/HW_OCOTP_CFG5
Then it is true that the device can be used.
         But I accidentally operated on the following statement:
echo 0x0000787B >/sys/fsl_otp/HW_OCOTP_CFG4
Then it operates again.
echo 0x00005860 >/sys/fsl_otp/HW_OCOTP_CFG4
cat /sys/fsl_otp/HW_OCOTP_CFG4
The result is 0x0000787B, not 0x00005860.
Then the system can't start.
          I used mfgtool to burn a uboot that was started from memory, modified the command imxotp, forced to write to 0x00005860, and used the command operation as follows:
         MX6Q SABRESD U-Boot >imxotp blow --force 5 0x5860
Current fuse at (index: 0x5) value: 0x787B
Blowing fuse at index: 0x5, value: 0x5860
Reloading shadow registers...
Operation succeeded fuse at (index: 0x5) value: 0x787B
But it still doesn't become 0x00005860.
         MX6Q SABRESD U-Boot >imxotp read 0x5
Reading fuse at index: 0x5
Fuse at (index: 0x5) value: 0x787B

        Or enter the system, as follows:

echo 0x00005860 >/sys/fsl_otp/HW_OCOTP_CFG4

The result is 0x0000787B, not 0x00005860.

         I can't help me. Please help me.

How to remove its value or write to 0x5860.

What's the matter with this situation?

       Online wait!

       Help, thank you!

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