i.MX6UL: UART serial download disabled selection fuse.

[jean-christoph4]

In the i.MX6UL RM, there is a description of a fuse named "UART serial download disabled selection" at location 0x470 (bit 4).

There is not a lot more description about this fuse. In particular, how different is it from the SDP_DIABLE fuse at location 0x460 (bit 17).

Could you provide an explanation on the relative use of these 2 fuses?

Thanks

JC

[Yuri]

Hello,

    "UART serial download disabled selection" relates to UART only.

SDP_DISABLE concerns both UART and USB.

Both fuses provide workarounds against the Vulnerability.

https://community.nxp.com/docs/DOC-334996 

Have a great day,

Yuri.

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[jean-christoph4]

So if I set SDP_DISABLE, I don't really need to set "UART serial download disabled selection" (event if it should not cause any trouble to also set "UART serial download disabled selection"), right?

Thanks.

JC

[Yuri · Accepted solution]

Correct, if  SDP_DISABLE is set, no need to set "UART serial download disabled selection".

~Yuri.