I have a Logitech Media Server/Squeezebox system currently running under Jessie/Max2Play with Squeezelite players 4 with Wolfson cards and HDMI audio adaptors on the rest all using Pi B boards. I wanted to extend and update the system. The server and HDMI players have been successfully rebuilt with Buster (wiithout Max2Play) but my installation of Wolfson drivers fails. The debug logs are here:
There is no vcgencmd report. It failed with a "Empty Document" response. vcgenmodcmd is present on the system. The kernel is 4.19.97+