... I then merged the rpi-dabpi overlay with the IQAudio DAC+ overlay using your DTS as a template. I think the same technique should work with the Hifiberry board, or any board that does not have a recording device. /dts-v1/; /plugin/; / { compatible = "brcm,bcm2837", "brcm,bcm2836", "brcm,bcm2835", ...