Hello,
I was able to use my Allo Piano DAC Plus on my Raspberry Pi 3 (ARMv7 kernel) until a recent upgrade.
After the upgrade, trying to start alsamixer results in a "cannot open mixer: no such file or directory,"
Listing of /dev/snd:
$this->bbcode_second_pass_code('', 'drwxr-xr-x 3 root root 180 Jun 24 05:37 .
drwxr-xr-x 16 root root 3160 Jul 19 19:52 ..
crw-rw----+ 1 root audio 116, 1 Jun 24 05:37 seq
crw-rw----+ 1 root audio 116, 33 Jun 24 05:37 timer')
My /boot/config.txt:
$this->bbcode_second_pass_code('', '# Memory
gpu_mem=16
# Sound
dtparam=i2s=on
dtoverlay=allo-piano-dac-plus-pcm512x-audio,glb_mclk
# Misc
# setting the max usb current to 1200mA
max_usb_current=1
# Boot
boot_delay=2
initramfs initramfs-linux.img followkernel')
lsmod | grep snd:
$this->bbcode_second_pass_code('', 'snd_soc_pcm512x_i2c 16384 0
snd_soc_pcm512x 28672 1 snd_soc_pcm512x_i2c
snd_soc_allo_piano_dac_plus 20480 0
snd_soc_bcm2835_i2s 16384 0
snd_soc_core 188416 3 snd_soc_pcm512x,snd_soc_bcm2835_i2s,snd_soc_allo_piano_dac_plus
snd_compress 20480 1 snd_soc_core
snd_pcm_dmaengine 16384 1 snd_soc_core
snd_bcm2835 24576 0
snd_pcm 94208 5 snd_soc_pcm512x,snd_pcm_dmaengine,snd_soc_bcm2835_i2s,snd_bcm2835,snd_soc_core
snd_timer 32768 1 snd_pcm
snd 69632 6 snd_compress,snd_soc_pcm512x,snd_timer,snd_bcm2835,snd_soc_core,snd_pcm')
modinfo snd_soc_allo_piano_dac_plus:
$this->bbcode_second_pass_code('', 'filename: /lib/modules/5.4.51-1-ARCH/kernel/sound/soc/bcm/snd-soc-allo-piano-dac-plus.ko.gz
license: GPL v2
description: ALSA ASoC Machine Driver for Allo Piano DAC Plus
author: Baswaraj K <jaikumar@cem-solutions.net>
alias: of:N*T*Callo,piano-dac-plusC*
alias: of:N*T*Callo,piano-dac-plus
depends: snd-soc-core
intree: Y
name: snd_soc_allo_piano_dac_plus
vermagic: 5.4.51-1-ARCH SMP preempt mod_unload ARMv6 p2v8')
uname -a:
$this->bbcode_second_pass_code('', 'Linux alarmpi 5.4.51-1-ARCH #1 SMP PREEMPT Wed Jul 15 02:49:03 UTC 2020 armv7l GNU/Linux')
Any help is appreciated. Thanks.
gm