Document for eFuse programming of i.MX6UL

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Document for eFuse programming of i.MX6UL

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Contributor V

Dear all,

I want to know the eFuse program procedure for i.MX6UL.

I am looking for the document such as the application note of i.MX25.

http://cache.nxp.com/files/dsp/doc/app_note/AN3682.pdf

- 4 Fuse Programming Procedure(P.17)

- 6 Sample Code(P.18-)

Is there such a document for i.MX6UL?

Best Regards,

Yuuki

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Contributor II

Hi,

I program the fuses few day ago... Good starting point is to read IMXULRM (fusemap, system boot, and on-chip OTP Controller) and AN4581

then you can program fuse from u-boot command prompt: fuse prog <bank> <word> <value> - this is permanent.

(how to build u-boot - you can find in i.MX6UL hab_status )

you can also normal boot into kernel, go to /sys/fsl_opt and echo <value> > HW_OCOTP_...

Regards,

Robert

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NXP TechSupport
NXP TechSupport

Hello,

   It is recommended to use NXP U-boot for fuse operations.

Regards,

Yuri.

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