topic Re: MAC fuses lock in i.MX Processors

MAC fuses lock

_andev_ — Mon, 11 May 2015 06:21:28 GMT

Hi,

I have a little question. How can I lock the MAC address fuses?

I have set the MAC address with

U-Boot > fuse prog 4 3 0x000000aa

U-Boot > fuse prog 4 2 0x11223346

and I get the MAC address 00:aa:11:22:33:46. But then I can do

U-Boot > fuse prog 4 2 0x11223347

and now I get the MAC address 00:aa:11:22:33:47

Is there any fuse prog x y z to lock the MAC address writing?

Regards

igorpadykov — Mon, 11 May 2015 07:37:02 GMT

HI Anonymous

suggest to check IMX6DQRM Table 5-2. Lock Fuses

Best regards

igor

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_andev_ — Mon, 11 May 2015 08:28:17 GMT

Then this is translate to a

fuse prog 0 0 0x300 ???

igorpadykov — Mon, 11 May 2015 11:27:19 GMT

Q&A: How to program i.MX6 eFUSE?

_andev_ — Mon, 11 May 2015 12:57:04 GMT

Igor,

I think it's easier to give the correct answer... the imxotp api seems deprecated in uboot.