simple audio card dts example

/ {
    sound {
        compatible = "simple-audio-card";
        simple-audio-card,name = "DSP";

        // "off-codec widgets"
        // simple-audio-card,widgets { };

        // simple-audio-card,routing { };

        // if mclk-fs is set then:
        //  - cpu is sysclk master
        //  - sysclk is dynamically configured to mclk-fs * fs
        // so this is almost never what you want!
        // simple-audio-card,mclk-fs = <..>;

        simple-audio-card,dai-link@0 {
            format = "i2s";
            frame-master = <&audio_master>;
            bitclock-master = <&audio_master>;

#if AUDIO_MASTER
            audio_master: cpu {
                sound-dai = <&mcasp0>;
                clocks = <&audio_osc_ck>;
            };

            codec {
                sound-dai = <&codec>;
            };
#else
            cpu {
                sound-dai = <&mcasp0>;
            };

            audio_master: codec {
                sound-dai = <&codec>;
                clocks = <&audio_osc_ck>;
            };
#endif
        };
    };
};