Enable WiFi through SDIO on a Jetson TX2 4GB

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hello!

I have a TX2 4GB mounted on a custom PCB/carrier board, which has a WiFi/BT chip connected to the SDIO/SDMMC3. The WiFi chip is a Telit WE866C6-P.

The TX2 4GB doesn’t recognize the WiFi chip, as far as I can tell. How do I enable the TX2 4GB to recognize the chip, and be able to connect to WiFi networks with it?

Best regards
Magnus Johansen

2

Here is another case with SDIO wifi.

3

Thank you for the quick reply!

I’ve looked at that post last week, but then I was not certain what my problems were.
After looking at it again it looks like it contains a lot of useful information for me.

I will report when I either have more questions or if I managed to solve the problem with the info I have!

-Magnus

4

Quick update!

I’ve been having trouble figuring out how to flash the updated device tree to the Jetson.
I tried to use the “dtc” command on the main file (tegra186-quill-p3489-0888-a00-00-base.dts), however, it failed to parse the file.
I did some research and found out that the file in the source code is not a pure device tree.

I did find the device tree in the dtb-format in the kernel/dtb folder and converted that back to dts using the “dtc” command.
However, I find that file more confusing to work with, as it contains variables that are not in the source code file.

I have also been pulled off this project for a couple of weeks, but I will update here to keep this thread alive until I’m back.

-Magnus

5

Hi,

Actually, you can find the dts source code in the L4T archive.

https://developer.nvidia.com/embedded/linux-tegra-archive

6

Thanks for that resource!

However, I do think it is the same source code as I have been working with (L4T 32.6.1; I downloaded it through the Jetson Download Center).
My problem is that I don’t know how to compile those source code files (from kernel_src/…/tegra186-quill-p3489-0888-a00-00-base.dts) into a device tree file (tegra186-quill-p3489-0888-a00-00-base.dtb).

That is why I went for the compiled dtb from kernel/dtb after flashing the device through SDK Manager.

-Magnus

7

Hi,

Please refer to the developer guide on the same website. The “Kernel customization” is what you need.

8

Thank you!

I will check that out.

9

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