Bureaucrats, dave_user, Administrators
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<section begin=History/>
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|1.0.0{{oldid|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"16739|Jun 2022/07/01}}|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|First release using DESK-MX8M-L-2.0.0-rc2release
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! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |DESK-MX8M-L-4.0.0 release
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The OTP eFuse registers should be locked in order to avoid unwanted registers (and then MAC addresses) modifications. OTP lock grants the MAC values cannot be modified anymore.
{{ImportantMessage|text=If not locked yet, OTP bits can be set to ''''1'''' but not reversed to ''''0'''' value, so some modifications can be applied if the eFuse registers are not locked. For more information see, for example, the [https://www.nxp.com/webapp/Download?colCode=IMX6SDLRM i.MX6 Dual Lite Reference Manual chap. 47.3.1.3] }}
The two MAC addresses - even if sharing register <code>bank:9 word:1</code> - can be programmed at different times.
<pre>
fuse prog -y 0 0 c000
</pre>
==== eFuse reading ====
The eFuse registers can be read - after programming - for checking the written values:
<pre class="workstation-terminal">
u-boot=> fuse read 9 0
Reading bank 9:
Word 0x00000000: c21eafa8
u-boot=> fuse read 9 1
Reading bank 9:
Word 0x00000001: afa90050
u-boot=> fuse read 9 2
Reading bank 9:
Word 0x00000002: 0050c21e
u-boot=>
</pre>