This is great information. I'm trying to diagnose poor audio quality and I think it might be because I improperly applied static patches for either HDA or HPET (or both). In the explanation for HDA in Post #1 of this thread, is the red text below (HDEF with AZAL) a typo or is this correct?
ACPI/DSDT/Fixes/FixHDA_8000
<key>FixHDA_8000</key>
<true/>
Clover Wiki: Corrects sound card properties to enable the native AppleHDA driver. The name is changed from AZAL to HDEF, layout-id and PinConfiguration are injected. Adding HDMI device if absent.
Explanation: Provides fixes for audio for older systems. Replaces HDEF with AZAL throughout DSDT. Also adds layout-id and pin configuration.