Hi Jerome Thank you for testing > I have tested this series on an Amlogic device (vim3l) > This brings warnings for cases which are perfectly fine. > > For example, one of the DPCM backends is the TDM interface. This > interface is capable of both playback and capture. It can be associated > with any i2s/TDM codec. > > The codec may do playback and capture too, but it > may also do a single direction. Then usual example is the hdmi codec > which does playback only. > > In this case I get: > axg-sound-card sound: CPU capture is available but Codec capture is not (be.dai-link-6) Please update Codec driver > > I don't think this is right. Hmm..., I'm confusing Does it mean you want to use "playback only" on it ? If so, did you get below warning too ? "both playback/capture are available, but not using playback_only flag (%s)\n", If not, can you please fill below ? Card dpcm_playback = (0 or 1) dpcm_capture = (0 or 1) playback_only = (0 or 1) capture_only = (0 or 1) BE.CPU playback = (available, not available) capture = (available, not available) BE.Codec playback = (available, not available) capture = (available, not available) Expect playback = (available, not available) capture = (available, not available) Thank you for your help !! Best regards --- Renesas Electronics Ph.D. Kuninori Morimoto