TUMBLEWEED No sound on Raspberry Pi4 aarch64

Hi,
I've just installed an OpenSuse Tumbleweed(LXQT) on a SD card and I'm now running it on a raspberry Pi4 with 4Gb of RAM, everything is working well except for the audio, I can't listen anything and the sound card is not being recognised, I just have a dummy card inside pulse audio mixer.

Is there a way to make the audio work on the raspberry Pi 4 ? I would like to have HDMI audio or if not possible at least the jack output audio...

Is there any blob firmware to load in order to make the embedded audio device to work ?


I followed the installation instructions here: https://en.opensuse.org/HCL:Raspberry_Pi4


Thank you!