Read/Write fuse from user space

[kunal_003]

Hi all,

We are using Yocto zeus and it seems the user space utility for reading and writing fuse registers are not present in new kernel. I found from Linux Reference manual, mention about nvmem sysfs entry and able to read/write using dd commands. However, I believe there would some proper method to do this. Can anyone share how to read/write fuse registers from user space in i.MX8MPlus SoC?

Regards,

Kunal

[joanxie]

pls refer to my another similar topic

"https://community.nxp.com/t5/i-MX-Processors/How-to-read-write-OTP-fuse-register-in-imx8mp/td-p/1469..."

[kunal_003]

Hi @joanxie ,

I already referred this link, it uses hexdump and print like utilities. Aren't there any user-space utility by NXP?

Regards,

Kunal

[joanxie]

the link I share also mentions uboot fuse command, you can use that

[kunal_003]

Hi @joanxie ,

Agree, u-boot provides fuse commands. However, I am looking for user space utility like "fsl_otp.c" , which I believe has been removed in latest L5.4 kernel.

Regards,

Kunal