Comment 4 for bug 1768991

I agree, that looks relevant:

[ 4849.250374] Audio Port: ASoC: no backend DAIs enabled for Audio Port

which comes from the kernel, sound/soc/soc-pcm.c:

        /* there is no point preparing this FE if there are no BEs */
        if (list_empty(&fe->dpcm[stream].be_clients)) {
                dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
                                fe->dai_link->name);
                ret = -EINVAL;
                goto out;
        }