Hello experts,
I am working on SAI audio with nau8235 audio codec, I have configured dts for i2c and sai node properly. And my Audio output is working fine with speaker, but I am getting some issue while working so please look into it.
1. when my device boot if I grep sound, I am getting No soundcards found. However, I am able to locate my sound card in /proc/asound/ so my question is that why audio codec is not detected automatically at device boot.
Below is my aplay log for reference.
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: nau8325audio [nau8325-audio], device 0: 42660000.sai-nau8325-hifi nau8325-hifi-0 [42660000.sa
i-nau8325-hifi nau8325-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
2. aplay utility is able to play 48000 sample rate wav file but when I try to play wav file with 44100 sample rate I am getting below errors from my driver.
[ 420.075939] nau8325 3-0021: The MCLK 24576000 is invalid. It can't get MCLK_SRC of 256/400/500 FS (44100)
[ 420.091644] nau8325 3-0021: ASoC: error at snd_soc_dai_hw_params on nau8325-hifi: -22
[ 420.100378] 42660000.sai-nau8325-hifi: ASoC: error at __soc_pcm_hw_params on 42660000.sai-nau8325-hifi: -22
ALSA lib /usr/src/debug/alsa-lib/1.2.7.2-r0/src/pcm/pcm_direct.c:1332:(snd1_pcm_direct_initialize_sla
ve) unable to install hw params
ALSA lib /usr/src/debug/alsa-lib/1.2.7.2-r0/src/pcm/pcm_dmix.c:1011:(snd_pcm_dmix_open) unable to initialize slave.
3. aplay utility only plays wav file if I explicitly define -D hw:0 flag while playing audio. why I need to put this flag if aplay already list my audio device in aplay -l.
