Does EHL Processor N6415 support time-aware GPIO?

[Yao-Ting]

As title, I would like to know whether or not N6415 supports the time-aware GPIO (tgpio).

I got an ASRock IMB-1004N and followed Intel online document to setup ECI tool, but it failed to find tgpio device while running tgpio samples on ubuntu 22.04.

https://eci.intel.com/docs/3.0.2/development/eci_build_engine.html#ecibuildengine

https://www.intel.com/content/www/us/en/docs/tcc-tools/developer-guide/2022-2/basic-time-aware-gpio-tgpio-samples.html

One clue is that I cannot find and configure BIOS options as mentioned. So, I think the problem may be resolved by an updated BIOS. But it's said that N6415 does not support TCC.

https://www.intel.com/content/www/us/en/docs/tcc-tools/developer-guide/2022-2/time-aware-gpio-tgpio-samples.html

Refer to Intel Atom x6000E datasheet, N6415 shall include the PSE with the tgpio inside. So, I'm confused if tgpio can only be enabled when TCC is supported.

https://www.intel.com/content/www/us/en/content-details/636112/intel-atom-x6000e-series-and-intel-pentium-and-celeron-n-and-j-series-processors-for-iot-applications-datasheet-volume-1.html

[CarlosAM_INTEL]

Hello, @Yao-Ting:

Thank you for contacting Intel Embedded Community.

The information that may clarify your consultations is stated in sections 22.18.7, 22.18.8, and 22.18.9, on pages 397 and 398 of the following document mentioned in the last part of your previous communication:

https://cdrdv2.intel.com/v1/dl/getContent/636112 

Best regards,

@CarlosAM_INTEL.

[Yao-Ting]

Thanks for the response. I know the gpio and tgpio are muxed and can be controlled by the registers.

But I want to clarify if Elkhart Lake N6415 can enable tgpio without TCC supported? If yes, what BIOS options should be set in such case?

[CarlosAM_INTEL]

Hello, @unitik:

Thanks for your reply.

We want to address the following questions:

Could you please let us know the place of purchase of the cited processor?

We are waiting for your clarification.

Best regards,

@CarlosAM_INTEL.

[Yao-Ting]

unitik?

About the place, I got the processor N6415 on ASRock IMB-1004N in Taiwan.

But I just got a response from ASRock that tgpio function is not supported on IMB-1004N.

Finally, It sounds like the tgpio pins are not exposed to users at their board-level design.