Reading the unique ID iMX8 mini

[baraths]

Hi team,

We are using i.MX8 Dual lite processor with Yocto Linux 5.4.47 kernel version for our application.

We have a requirement to identify each device with an Unique ID. By using cpuinfo and procinfo we could not retrieve any unique ID value.

So we tried the following command, 

cat /proc/device-tree/serial-number

What is this serial number returned by the above command? If it is same as the unique ID then can we use it for our application?

Can you suggest us the method to read the Unique ID of processor so that we can use the same.

Regards,

Barath.S

[joanxie]

you can read this from fuse map, pls refer to the link as below:

"https://community.nxp.com/t5/i-MX-Processors/How-can-I-get-UID-on-i-mx8mq-platform/m-p/986789"