About Errata EHL34 on Intel x6000e Elkhart lake

[TOYORN]

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,

[IsaacQ_Intel]

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

[Diego_INTEL]

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 

[TOYORN]

Thanks Diego.

I would like to know more.

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

Best regards,

[Diego_INTEL]

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 

[TOYORN]

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

Thanks.