No HDMI Audio on Framework Laptop

I just got a Framework laptop, i5 version and I installed Manjaro KDE on it.
Right now I’m unable to get an audio output on either the HDMI or Displayport expansion cards. The output of aplay -L didn’t list the audio output, but it did list a ton of HDMI audio outputs, but I assume those are not accessible (I tried outputting sound through each one and didn’t get audio out of my laptop’s HDMI)

From what I can tell, both the HDMI and DP expansion cards on the Framework laptop use Displayport Alternate mode over USB-C. I can get video just fine, but I can’t get audio at all. Is there a package or kernel module I’m missing to get audio? Or is audio over DP alt mode not supported yet?