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
Hi Bala
issue may be caused by incorrect power-up sequence, one can recheck it using
datasheet and hardware user guide
i.MX 6Solo/6DualLite Applications Processors for Consumer Products
also one can try to program fuse in uboot https://community.nxp.com/docs/DOC-95458
Best regards
igor
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