HummingBoard Pulse & i.MX8M Plus missing audio devices

Hi,

I’m missing the audio devices on my HummingBoard Pulse & i.MX8M Plus.
I’m using the yocto gatesgarth imx8mpsolidrun image provided by solidrun.
aplay -L only display the null and die pulse audio interface, no hardware audio interfaces.

I found some messages around the audio interfaces in dmesg:

[    1.827337] fsl-sai 30c30000.sai: failed to get bus clock: -517
[    1.835206] fsl-easrc 30c90000.easrc: failed to get mem clock
[    1.843562] imx-cdnhdmi sound-hdmi: failed to find SAI platform device
[    1.850122] imx-cdnhdmi: probe of sound-hdmi failed with error -22

[    6.213189] wm8904 1-001a: supply DCVDD not found, using dummy regulator
[    6.218952] basler_camera_driver_vvcam: loading out-of-tree module taints kernel.
[    6.222899] at24 0-0050: 256 byte 24c02 EEPROM, writable, 16 bytes/write
[    6.223725] wm8904 1-001a: supply DBVDD not found, using dummy regulator
[    6.223769] wm8904 1-001a: supply AVDD not found, using dummy regulator
[    6.223807] wm8904 1-001a: supply CPVDD not found, using dummy regulator
[    6.223845] wm8904 1-001a: supply MICVDD not found, using dummy regulator
[    6.230431] wm8904 1-001a: Failed to read ID register: -6

Complete dmesg output:https://pastebin.com/rZ5BkNmf
Did you have any ideas what could be the problem

Best regards, Jonas

Support for this hardware has been added in our upcoming hardknott yocto release, and should be able to be integrated into gategarth as well. The kernel repository is here GitHub - SolidRun/linux-stable at lf-5.10.72-2.2.0-sr and the meta layer and official image will be out this week.