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VChag
Beginner
1,046 Views

how to enable PCIe # 1 in software on the Atom 3825 Processor

Hi

Two mPCIe interfaces are added to the Custom Minnowbooard max board to connect two WiFi modules. One mPCIe interface is connected to the PCIE # 1 and another is connected to the PCIE # 3 on ATOM 3825 Processor. I could able to see one PCIe bus (PCIE # 3) in the OS, using lspci and I am unable to find PCIE # 1 interface in the OS. I enabled all the PCIe slots in the BIOS and also included all the necessary kernel modules in the kernel config.

Please tell me if anyone knows how to bring up the PCIe # 1 interface, any suggestions/ inputs are highly appreciated.

Details:

Processor: INTEL ATOM

OS: OpenWrt/ Buildroot

lspci result:

00:00.0 "Class 0600" "8086" "0f00" "8086" "7270"

00:02.0 "Class 0300" "8086" "0f31" "8086" "7270"

00:14.0 "Class 0c03" "8086" "0f35" "8086" "7270"

00:1a.0 "Class 1080" "8086" "0f18" "8086" "7270"

00:1b.0 "Class 0403" "8086" "0f04" "8086" "7270"

00:1c.0 "Class 0604" "8086" "0f48" "8086" "7270"

00:1c.2 "Class 0604" "8086" "0f4c" "8086" "7270"

00:1c.3 "Class 0604" "8086" "0f4e" "8086" "7270"

00:1f.0 "Class 0601" "8086" "0f1c" "8086" "7270"

00:1f.3 "Class 0c05" "8086" "0f12" "8086" "7270"

02:00.0 "Class 0200" "10ec" "8168" "10ec" "8168"

03:00.0 "Class 0280" "168c" "0046" "168c" "cafe"

Thanks

Vamsi

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3 Replies
CarlosAM_INTEL
Moderator
90 Views

Hello, Vamsi@Chagari:

Thank you for contacting Intel Embedded Community.

We would like to help you to solve this inconvenience, but the information that may help you is handled by the manufacturer of the board that you are using.

Due to this fact as a reference, please address your questions of this kind to the https://github.com/MinnowBoard-org/bugs-and-help MinnowBoard.org issue and get help submission website and/or https://www.minnowboard.org/help/join-the-minnowboard-mailing-list MinnowBoard mailing list as is stated at the https://minnowboard.org/help get help site.

We hope that this information may help you.

Best regards,

Carlos_A.

VChag
Beginner
90 Views

Dear Carlos

Thank you so much for the reply.

I appreciate your time and efforts. Thank you, I will do that.

Yes, definitely.

Regards

Vamsi

CarlosAM_INTEL
Moderator
90 Views

Hello, Vamsi@Chagari:

Thanks for your update.

The information that may help you with your PCIe port 1 problem must be reviewed with the assistance of your BIOS developer, please refer to section 29.2, on pages 151 and 152 of the https://edc.intel.com/Link.aspx?id=12828 Intel(R) Pentium(R) and Intel(R) Celeron(R) Processor: Writers Guide (Vol. 2 of 2) Document # 514148.

It is important to let you know that an EDC Privileged account should be required to have access to this document.

To learn more about the benefits of an EDC Privileged account go to http://www.intel.com/content/www/us/en/embedded/embedded-design-center-support.html http://www.intel.com/content/www/us/en/embedded/embedded-design-center-support.html. Then click on "APPLY NOW" found under the heading, "Apply for extras with privileged access to the Intel EDC¹". After you submit the application, please let us know and we will expedite the review of your application.

We suggest you to use your business email address, to evade any inconvenience. Please avoid the free email provider's address (such the provided by Hotmail, Gmail, yahoo, or others).

We hope that this information is useful to you.

Best regards,

Carlos_A.

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