Unique Id or serial from imx7s

[edwardtyrrell]

Hi,

I'm after a way in userspace to be able to access the imx7s's manufacturing serial number ( if available ).

The imx6 uses cat /sys/fsl_otp/HW_OCOTP_CFG0,1 but these aren't available on the imx7s.

Thanks. 

[b36401 · Accepted solution]

You can use eFuse 0x420 that contains wafer number and coordinates of the chip on the wafer.
Please refer 6.3.3 "Fusemap Descriptions Table" chapter of i.MX 7Solo Applications Processor Reference Manual for the details.

Have a great day,
Victor

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[edwardtyrrell]

Thanks Victor,

Descriptions like wafer number are missing from the fuse map in my document they are all entitled "TESTERn". I'm going to use it 0x420. Could you give me the description for 0x410 please?

.      

[edwardtyrrell]

Found in a more up-to-date data sheet.