HIFIBERRY DAC+ AND OpenWrt

Installing and Using OpenWrt
1

Hello
I cannot run HiFiBerry DAC + on OpenWRT 19.07. After installing the package: kmod-sound-soc-hifiberry-dacplus and configuring the /boot/config.txt file according to instructions from the page:

the card is not detected in the system.

However, after installing the kmod-sound-soc-hifiberry-dac module, the card is detected

kern.info kernel: [7.935916] snd-hifiberry-dac soc: sound: ASoC: CODEC DAI pcm5102a-hifi not registered - will retry
kern.info kernel: [7.956157] snd-hifiberry-dac soc: sound: pcm5102a-hifi <-> 20203000.i2s mapping ok

root @ OpenWrt: ~ # aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0 [HifiBerry DAC HiFi pcm5102a-hifi-0]
Subdevices: 1/1
Subdevice # 0: subdevice # 0

but it doesn't work

Please help.

2

what doesn't work ?

3

The sound card does not work. :wink:
It is not detected by the system.

kern.info kernel: [    7.425591] snd-rpi-hifiberry-dacplus soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered - will retry

Maybe something is missing?
Of course, the card works fine in another system (Volumio).

4

well,
you could try to check which modules Volumio loads for it to work.

5

What do you think?

OpenWrt:

root@OpenWrt:~# lsmod | grep snd
ac97_bus               16384  2 snd_soc_core,snd_ac97_codec
snd                    81920 12 snd_soc_pcm512x,snd_bcm2835,snd_soc_core,snd_ac97_codec,snd_rawmidi,snd_seq_device,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss,snd_hwdep,snd_compress
snd_ac97_codec        118784  0
snd_bcm2835            24576  0
snd_compress           24576  1 snd_soc_core
snd_hwdep              20480  0
snd_mixer_oss          32768  1 snd_pcm_oss
snd_pcm                98304  8 snd_soc_pcm512x,snd_soc_hifiberry_dacplus,snd_soc_bcm2835_i2s,snd_bcm2835,snd_soc_core,snd_ac97_codec,snd_pcm_oss,snd_pcm_dmaengine
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_pcm_oss            57344  0
snd_rawmidi            45056  0
snd_seq_device         16384  1 snd_rawmidi
snd_soc_bcm2835_i2s    16384  0
snd_soc_core          155648  3 snd_soc_pcm512x,snd_soc_hifiberry_dacplus,snd_soc_bcm2835_i2s
snd_soc_hifiberry_dacplus   16384  0
snd_soc_pcm512x        32768  0
snd_timer              36864  1 snd_pcm
soundcore              16384  1 snd

Volumio:

volumio@volumio:~$ lsmod | grep snd
snd_soc_pcm512x_i2c    16384  1
snd_soc_pcm512x        32768  1 snd_soc_pcm512x_i2c
snd_soc_hifiberry_dacplus    16384  1
snd_soc_bcm2835_i2s    20480  2
snd_soc_core          192512  3 snd_soc_pcm512x,snd_soc_hifiberry_dacplus,snd_soc_bcm2835_i2s
snd_bcm2835            24576  0
snd_compress           20480  1 snd_soc_core
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_pcm               102400  7 snd_soc_pcm512x,snd_pcm_dmaengine,snd_soc_hifiberry_dacplus,snd_soc_bcm2835_i2s,snd_bcm2835,snd_soc_core
snd_seq                69632  0
snd_seq_device         16384  1 snd_seq
snd_timer              32768  2 snd_seq,snd_pcm
snd                    73728  9 snd_compress,snd_soc_pcm512x,snd_seq,snd_timer,snd_seq_device,snd_bcm2835,snd_soc_core,snd_pcm

How can I add another module from another system?

6

you can't.

Check if you need a asound.conf file, or copy from Volumio, if there's one there.

7

There is no such file in the volumio system.

I think the snd_soc_pcm512x_i2c module is missing from OpenWrt.