Re: [RFC PATCH] ASoC: simple-card: Use dai_id from node description

On Wed, Nov 22, 2023 at 5:39 AM Kuninori Morimoto kuninori.morimoto.gx@renesas.com wrote:

Hi Daniel

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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)

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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 */ };  };
            };
    };

This works! Thanks. I didn't know that you can leave an endpoint unused :).

So please ignore my initial patch then.