ZERO 3W build missing AIC8800 drivers and wlan0

[elockman]

@RadxaStephen

I've been able to build the ZERO 3W per the changes shown in Issue #21 I believe Issue #21 also resolves Issue #18

Nevertheless, I am building the scarthgap branch on Ubuntu 22.04.5 LTS with the following command: MACHINE=radxa-zero-3w bitbake core-image-base and loading the image onto a microSD card

My issue is that I do not see a wlan0 or aic8800 drivers The debian build contains aic8800_fdrv and aic8800_bsp drivers

However, on the yocto build:

ip a only yields the loopback interface

lspcidoes not yield anything

lsmod | grep aic8800 does not yield anything

I've also tried building core-image-minimal and core-image-full-cmdline images 1) It appears that the build is missing the onboard wifi drivers. Is there another predefined image to try? 2) How can I add aic8800 support to a yocto build to bring wlan0 back?

[elockman]

@RadxaStephen @RadxaYuntian

I've created my own custom image with the same results.

I have USB WiFi adapters (MT7610U and RT5370) as additional WiFi options, and have included the following config to include their drivers.

CONFIG_MT76=m
CONFIG_MT76x0U=m
CONFIG_RT2800USB=m

I also have linux-firmware and kernel-modules packages included in my build.

lsusb shows that these devices are recognized, however wlan0 still does not appear when these devices are inserted.

I also see that radxa has posted the driver code for the aic8800 here. It appears I would have to create a custom yocto recipe to compile and install this code. I assume that I want to install the PCIE version, is that correct? Do you have a sample recipe you can share for the onboard wifi support?

Also, what must I do to get the wlan0 interface to show up with the ip a command?

I would prefer to get the onboard wireless module working. The USB WiFi devices are a secondary priority. I am evaluating the ZERO 3W for our company and need to have a solution to move forward with this product. Any help would be appreciated.

Thanks

[RadxaYuntian]

You need to use SDIO version of the driver. We also do not guarantee it can work properly on mainline kernel, since the vendor did not test against that kernel.

[elockman]

@RadxaYuntian Thank you.

I have drivers installed in my build for mt76. Can you offer an example yocto recipe to try to get wireless support on the 3W? Or perhaps a list of kernel packages and CONFIG_* you would include?

[RadxaYuntian]

We currently don't have a Yocto recipe for it. The chipset also requires userspace hacks to get Bluetooth working.

[RadxaYuntian]

We use systemd service in normal Debian to run it at boot time, which may not be available in Yocto.

[elockman]

Understood.

It looks like the defconfig file that the project points to is pretty limited. I'll add to the defconfig based on other projects.

[elockman]

I've made progress today with usb wifi modules. I've been able to connect to WiFi with an mt7610u. I'll provide more info once I have things dialed in a little more.