Is there a way to enable the audio jack? Only the HDMI audio is working.

first thing would be t check if the analog-audio is enabled in the .dtb/.dts with the command

aplay -l

 

Is there only the HDMI-device listed or also the analog 3.5mm-audio-device?

Same problem here,

 

arm-64:~:# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: GXLS905XP212 [GXL-S905X-P212], device 0: fe.dai-link-0 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
arm-64:~:# aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
lavrate
    Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pulse
    PulseAudio Sound Server
speex
    Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
default
hw:CARD=GXLS905XP212,DEV=0
    GXL-S905X-P212,
    Direct hardware device without any conversions
plughw:CARD=GXLS905XP212,DEV=0
    GXL-S905X-P212,
    Hardware device with all software conversions
sysdefault:CARD=GXLS905XP212
    GXL-S905X-P212,
    Default Audio Device
hdmi:CARD=GXLS905XP212,DEV=0
    GXL-S905X-P212,
    HDMI Audio Output
dmix:CARD=GXLS905XP212,DEV=0
    GXL-S905X-P212,
    Direct sample mixing device
usbstream:CARD=GXLS905XP212
    GXL-S905X-P212
    USB Stream Output

Since Linux v5.10 it is a bit complicated to get it working. Try this:

 

# Reset and re-initiate ALSA mixer states
rm /var/lib/alsa/asound.state
alsactl init
# Enable 3.5mm output
amixer -c 0 set 'TOACODEC OUT EN' 'on'
# Use I2S B as source for 3.5mm output, I2C A is somehow not usable
amixer -c 0 set 'TOACODEC SRC' 'I2S B'
# Use ALSA device 0 as input for I2S B
amixer -c 0 set 'TDMOUT_B SRC SEL' 'IN 0'
# Enable I2S B (SRC 2) on device 0 (_A)
amixer -c 0 set 'FRDDR_A SRC 2 EN' 'on'
# Set output channels for device 0 (_A)
amixer -c 0 set 'FRDDR_A SINK 1 SEL' 'OUT 0'
amixer -c 0 set 'FRDDR_A SINK 2 SEL' 'OUT 1'
amixer -c 0 set 'FRDDR_A SINK 3 SEL' 'OUT 2'
# Set master volume to 85%
amixer -c 0 set 'ACODEC' '85%'

 

No idea how you came up with this magic incantation, but it works like a charm for me!

 

This is some amixer magic...... Anyone know how to do the same for the 7pin spdif?