sound_i2s {
         compatible = "simple-audio-card";
         simple-audio-card,format = "i2s";
         simple-audio-card,name = "rockchip,boardcon-codec";
         simple-audio-card,mclk-fs = <512>;

         simple-audio-card,dai-link@0 {
             format = "i2s";
             cpu {
                 sound-dai = <&i2s>;
             };
             codec {
                 sound-dai = <&hdmi>;
             };
         };

         simple-audio-card,dai-link@1 {
             format = "i2s";
             cpu {
                 sound-dai = <&i2s>;
             };

             codec {
                 sound-dai = <&es8323>;
             };
         };
     };