Re: Connection to a WPA2 Wi-Fi router fails

[Waldemar Brodkorb <wbx@openadk.org>]

Hi Sven,

for OpenADK I have now a working setup with connman 2.0 without
patching. I had to enable CONFIG_SAE in wpa_supplicant (even if no
WPA3 is involved) and updated
the cypress firmware files to the version you linked to.

Now I try Buildroot again.

Thanks
 Waldemar

Dembianny Sven (BSH GDE-EDSD7) wrote,

> Hi Waldemar,
> 
> yes, now there is an idea:
> 
> Your device is running kernel 6.18.38, but the official Infineon
> release for CYW43455 supports only up to kernel 6.6.23, as far as I can
> see here:
> 
> https://community.infineon.com/t5/AIROC-Wi-Fi-and-Wi-Fi-Bluetooth/
> Cypress-Linux-WiFi-Driver-Release-FMAC-2025-06-30/td-p/1046940
> 
> That means you are missing some patches required for proper Wi-Fi
> functionality. In particular, WPA3-related patches could cause the issue,
> for example:
> 
> 0056-brcmfmac-support-external-SAE-authentication-in-stat.patch
> 0067-brcmfmac-Revise-channel-info-for-WPA3-external-SAE.patch
> 0068-brcmfmac-Fix-structure-size-for-WPA3-external-SAE.patch
> 0073-brcmfmac-enable-pmk-caching-for-ext-sae-wpa3-ap.patch
> 
> Best regards, Sven
> > -----Original Message-----
> > From: Waldemar Brodkorb <wbx@openadk.org>
> > Sent: Montag, 17. August 2026 09:19
> > To: Dembianny Sven (BSH GDE-EDSD7) <sven.dembianny@bshg.com>
> > Cc: Waldemar Brodkorb <wbx@openadk.org>; Michael Nazzareno Trimarchi
> > <michael@amarulasolutions.com>; François Galea <fgalea@free.fr>; connman@lists.linux.dev
> > Subject: Re: Connection to a WPA2 Wi-Fi router fails
> > 
> > Hi Sven,
> > 
> > Dembianny Sven (BSH GDE-EDSD7) wrote,
> > 
> > > Hi Waldemar,
> > >
> > > no idea at the moment, but this looks like a different issue, potentially an initialization-related topic.
> > 
> > Fair enough. In the meanwhile I switched from Buildroot to OpenADK (my own embedded system
> > buildsystem) and with that I can reproduce the original failure. I will investigate the Buildroot error later.
> > 
> > Attached is the output of wpa_supplicant on the console, when I try to connect to my WPA2 WLAN
> > router. wlan0 is the interface.
> > 
> > Any idea for the original issue?
> > 
> > The only error I see is:
> > Line 0: invalid key_mgmt 'SAE'
> > 
> > best regards
> >  Waldemar
>