Rock 3C audio RK809 card

[z3nb4k1]

Hello,

 

With kernel 6.6.56-current-rockchip64 the audio works correctly:
cat /proc/asound/cards
 0 [RK809          ]: simple-card - Analog RK809
                      Analog RK809
 1 [HDMI           ]: simple-card - HDMI
                      HDMI

 

With kernel 6.12.30-current-rockchip64 the RK809 card is not available:
cat /proc/asound/cards
 0 [HDMI           ]: simple-card - HDMI
                      HDMI

 

How can this be solved ?
Thank you so much !

[laibsch]

I am not very familiar with Radxa and Rock.  But I cannot find the board among those supported by armbian.  Let me ask you where you got your image and kernel?

[z3nb4k1]

Hi !

 

I got the Bookworm minimal image here:
https://www.armbian.com/cf7stdb-entries/rock-3c/

Armbian_community_25.8.0-trunk.38_Rock-3c_bookworm_current_6.12.30_minimal.img.xz

 

I think I could try getting the image here too:
https://armbian.atomonetworks.com/dl/rock-3c/archive/

Armbian_25.2.1_Rock-3c_bookworm_current_6.12.13_minimal.img.xz

[Werner]

I'd probably start with comparion the device trees of both images and check for altered/removed nodes related to audio.

[z3nb4k1]

I tried the image from "armbian.atomonetworks.com" and the exact same thing happens.

Thanks, I'll compare the images.

[7alken]

hi, not sure for the sbc, but on uefi-x86, alsa has hdmi audio, but its not loaded for pulseaudio ... ??
here I managed to load it and unmute SPDIF in alsamixer

(I still dont understand how devicetree powered SBCs differ against uefi-x86 system ... excuse me)
 

crucial help from Lyra 🙂 ... unmuting SPDIF did the thing, probably also loading the sink also, ufff
https://chatgpt.com/share/68836e5f-9e4c-8000-8874-46ea35a07331