Hi Daniel > > But hmm... in your case, you need to setup 2ports, and use 2nd port > > is assumed approach. > > Why you don't setup full port ? Do you have some reason ?? (snip) > Now, I want to write a DTS description where my DAI link uses > Component 0 (CPU) (with its DAI index 1) connected with Component 1 > (codec) (with its DAI index 0). Thank you for indicating your DTS. So in imx8m_dai case, it has total 3 DAIs, and you want to use reg = 1. In such case, your DTS need to have like below, if my understanding was correct. dsp: dsp@3b6e8000 { ports { port@0 { reg = <0>; endpoint { /* not used */ }; }; cpu: port@1 { reg = <1>; cpu_ep: endpoint { remote-endpoint = <xxx>; }; }; port@2 { reg = <2>; endpoint { /* not used */ }; }; }; }; Thank you for your help !! Best regards --- Kuninori Morimoto