6 虚拟声卡 DTS 更改

要在 DTS 中使用虚拟编解码器，您需要应用以下补丁：

https://patchwork.kernel.org/project/alsa-devel/patch/5652E348.8080002@invoxia.com/

器件树更改为包括虚拟编解码器和注册为虚拟声卡。

codec_test: codec_test {
compatible = "linux,snd-soc-dummy";
#sound-dai-cells = <0>;
status="okay";
};
 
codec_test: codec_test {
                compatible = "linux,snd-soc-dummy";
                #sound-dai-cells = <0>;
                status="okay";
        };
 
  
 
codec_audio: sound {
 
                compatible = "simple-audio-card";
                simple-audio-card,name = "AM62X-DUMMY";
                simple-audio-card,format = "i2s";
                simple-audio-card,bitclock-master = <&sound_master0>;
                simple-audio-card,frame-master = <&sound_master0>;
 
  
 
                sound_master0: simple-audio-card,cpu {
                sound-dai = <&mcasp1>;
                system-clock-direction-out;
                };
 
  
 
                simple-audio-card,codec {
                        sound-dai = <&codec_test>;
                };
        };