Xiaomi Redmi Note 4 (mido) working and getting a freaking amazing audio quality, mind blowing for such a cheap device...
Snapdragon 625 (chip), msm8953 (cpu), WCD9335 (Integrated in Chip DAC ... /sys/module/wcd9335_dlkm)
System: Android 11, Lineage 18.1 (zeelog version) ... Also tested working with Omnirom v8.1, Android v8.1 mido) pasted a lot of details for the dev but this works out of the box with a fresh rom install...
Double checked with audio frequency test files and with the root command "dumpsys media.audio_flinger"
Note that Poweramp Equalize app, audio processing needs to be disabled when using Poweramp player... PAE does not work with Hi-Res anyway
Partial output of "dumpsys media.audio_flinger"
/vendor/etc/audio_effects.xml
/vendor/etc/audio_output_policy.conf
/system/etc/audio_effects.conf
/vendor/etc/audio_policy_configuration.xml
Also note that I am using dolby digital plus equalizer library... but its disabled and having it or not should not affect the compatibility
Captures of Poweramp Player + Xiaomi's Dirac Option... (not really related)