Dne 20. 05. 21 v 19:50 Dmitry Osipenko napsal(a): > Squash all machine drivers into a single-universal one. This reduces > code duplication, eases addition of a new drivers and upgrades older > code to a modern Linux kernel APIs. > > +static struct snd_soc_card snd_soc_tegra_wm9712 = { > + .dai_link = &tegra_wm9712_dai, > + .num_links = 1, > + .fully_routed = true, > +}; Please, could you also initialize snd_soc_card->components? It may be useful to pass the codec identification to the user space like: .components = "codec:wm9712" The passed information should be consistent. You may look into the Intel ASoC drivers for the examples (card->components initialization). There are also hints about the number of connected microphones ("cfg-mic:2" - configuration with 2 microphones) or the codec purpose ("hs:rt711" - headset codec is RT711) etc. Jaroslav Jaroslav Kysela <perex@xxxxxxxx> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.