I'm currently running Freescale BSP on imx8mqevk(4.9.88-imx_4.9.88_2.0.0).
Now, I have a problem with audio controlling. The speaker itself is working fine but there's no volume control. I could play audio files via aplay command but opening up alsamixer just says "This sound device does not have any controls".
here is the list of the detected sound cards:
$ cat /proc/asound/cards
0 [wm8524audio ]: wm8524-audio - wm8524-audio
1 [imxspdif ]: imx-spdif - imx-spdif
2 [imxhdmiarc ]: imx-hdmi-arc - imx-hdmi-arc
3 [imxaudiohdmi ]: imx-audio-hdmi - imx-audio-hdmi
Any assistance would be appreciated.
Unfortunately, this could be due to the Audion codec that the i.MX8MQ-EVK has is too simple. The driver could not has the functionality to modify the Audio configuration of the codec. What you could make is modify the asound.conf file to modify the default sound configuration. However, I am not quite sure if this could also work. I apologize for the inconveniences this could give you.