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About Errata EHL34 on Intel x6000e Elkhart lake

TOYORN
Beginner
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Hi,everyone

We are developing products on the Intel x6413E Elkhart lake platform.

There is an explanation of the following errata in document Number:636674.

 

EHL34 System Hang During G3 Exit Following RTC Reset

Problem:
Following a RTC Reset the PCH debug subsystem may enter an unsupported state if Delayed Authentication Mode (DAM) and DCI are disabled.

Implication:
The system may hang while exiting G3 and requires reflashing the system IFWI to recover.

 

To avoid this problem, should We add an RTC battery?

 

Best regards,

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5 Replies
IsaacQ_Intel
Employee
814 Views

Hello TOYORN

 

Thank you for posting on the Intel️® communities. 

 

 We will move your question to the correct sub-forum, the team in charge will get back to you soon.

 

Best regards,

 

Isaac Q. 

Intel Customer Support Technician


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Diego_INTEL
Moderator
792 Views

Hello @TOYORN,

 

Thank you for contacting Intel Embedded Community.

 

As I understand right now, it seems that it was an issue that has been found in other families, like is mentioned in the document #655359 for example and has been fixed with a PMC update, but in Elkhart Lake it is under study yet.

 

Regarding your question, I have not found if it applies to coin or coinless designs, but it is more to a PMC bug, if you have any hang that may be related you can notify us.

 

Best regards,

 

@Diego_INTEL 

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TOYORN
Beginner
785 Views

Thanks Diego.

I would like to know more.

Is it possible to avoid EHL34 if I enable DAM or DCI?

 

Best regards,

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Diego_INTEL
Moderator
682 Views

Hello @TOYORN,

 

I'm still checking, my apologies for the delay, even for the Alder Lake S I didn't find further details, only that it is due to the PMC and that it was fixed but they didn't mentioned anything else. I would suppose that if any of the options is enabled, the issue won't happen, but again I have not confirmed this yet.

 

Best regards,

 

@Diego_INTEL 

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TOYORN
Beginner
620 Views

OK, I understand that It's still being checked.

Thanks.

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