Aravisian,
The SOF firmware was a good lead, thank you.
It led me further more to this blog post about the Dell XPS 2020 with same sound card as precision 5750. Apparently its a know issue on XPS 2020 that sound isnt working…
https://blog.fts.scot/2020/07/04/dell-xps-2020-how-to-get-audio-working-on-linux/
I checked out the patches posted there (and actually took a swing at upgrading to kernel 5.8), and believe it or not I have sound! At least from my 3.5mm jack. Still working on the speakers
But all in all i’d call this a win!