Rock64 no audio output

[yogo1212]

speaker-test is silent.

alsamixer detects the card “rockchip,rk3328” but shows this message:
“This sound device does not have any controls.”

i’ve found people on the pine64-forum from different distros who changed their asound.conf to change ctl and pcm to 1 but it doesn’t do anything for me.

another answer is about adding a node to the device tree in ayufan’s kernel.
which doesn’t apply here since the node exists.

however:

$ cat /proc/device-tree/analog-sound/status
disabled

is there a way to enable it?

[Strit]

We patch in HDMI sound card on Rock64 in our kernel, so it should be there.
But there is no Analog sound in the mainline kernel it seems.

The Roc-CC seems to have gotten an analog sound node recently, so you can try [patching that in] your kernel.

[yogo1212]

hi @Strit

thanks for your answer.

i went and had a look at the hdmi-sound node.
the node exists.
but:

$ fdtget /boot/dtbs/rockchip/rk3328-rock64.dtb /hdmi-sound status       
disabled  

i’ve tried enabling the analog-sound node:

sudo fdtput -t s /boot/dtbs/rockchip/rk3328-rock64.dtb /analog-sound status okay
reboot

but without effect :-/

it was enabled on 6. Jan in the upstream kernel along with some other changes.

[Strit]

If the kernel produces the sound card, and it’s listed with aplay -l, then it’s a matter of configuring it in your environment.

Maybe it needs a special asound.conf file, like the Pinebooks.

[yogo1212]

ok. i was under the impression that it wouldn’t work with status: "disabled".

with the status set to “okay” and after running speaker-test (unsuccesfully), programs like aplay -L just freeze.
before running speaker-test, aplay -L works just fine and gives:

default:CARD=Analog
    Analog, ff010000.i2s-rk3328-hifi ff410000.codec-0
    Default Audio Device
sysdefault:CARD=Analog
    Analog, ff010000.i2s-rk3328-hifi ff410000.codec-0
    Default Audio Device

with analog-sound.status set to disabled again, this is the output of aplay -L:

default:CARD=rockchiprk3328
    rockchip,rk3328, ff000000.i2s-i2s-hifi i2s-hifi-0
    Default Audio Device
sysdefault:CARD=rockchiprk3328
    rockchip,rk3328, ff000000.i2s-i2s-hifi i2s-hifi-0
    Default Audio Device

i had hoped to see separate analog and HDMI devices.

then i should probably stop tinkering with the device tree

i’ll report if i find a way of getting it to work with alsa config.

in the meantime, i found this.

[Strit]

@yogo1212

in the meantime, i found this.

Yeah, it’s merged for kernel 5.12. You can test linux-rc in unstable branch, to see if it works.

[yogo1212]

With linux-rc, there are these three devices:

$ aplay -L | grep "^default"
default:CARD=Analog
default:CARD=SPDIF
default:CARD=HDMI

very promising!
thanks!

it seems like a good direction but i don’t suppose it will save me from digging deeper into ALSA…

[yogo1212]

forgot to add: sound works - just no controls…

cvlc --play-and-exit https://billwurtz.com/i-just-did-a-bad-thing.mp4

[yogo1212]

I’ve tried to understand how and when ALSA loads the card configuration, tried many file names, forced syntax errors, done lots of reboots…