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Facing issue while fusing the SOM

Question asked by Bala Subramaniyam on Oct 3, 2019
Latest reply on Oct 4, 2019 by igorpadykov

Hi,

I'm using i.MX6 SOLO SOM. And I'm trying to fuse the SOM by using the below command.

 

CFG4: (eMMC fuse)
echo 0x4060 > /sys/fsl_otp/HW_OCOTP_CFG4

 

CFG5: (BT_FUSE_SEL)

echo 0x10 > /sys/fsl_otp/HW_OCOTP_CFG5

 

When I fused CFG4 and read I get the same value which I was written. But when I fuse the CFG5 and read I get the wrong value.

$ echo 0x10 > /sys/fsl_otp/HW_OCOTP_CFG5

$ cat  /sys/fsl_otp/HW_OCOTP_CFG5

0x1

 

These issue only occurs in 10 out of 100 SOM in a same slot.

 

 

Hoping for better guidance.

 

Thanks and Regards,

Bala

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