aio3399音频

Njzy_Njzy · 发表于 2018-8-9 11:49:56

各位大神有个疑问就是图中两种方式配置的hdmi 有什么区别  现在配置HDMI声卡方式总共有三种都被搞混了  一套是 RK 自定义HDMI 框架，
hdmi_sound: hdmi-sound {
            compatible = "simple-audio-card";
            simple-audio-card,format = "i2s";
            simple-audio-card,mclk-fs = <256>;
            simple-audio-card,cpu {
                     sound-dai = <&i2s2>;
            };
            simple-audio-card,codec {
                     sound-dai = <&dw_hdmi_audio>;
            };
      };

      dw_hdmi_audio: dw-hdmi-audio {
            status = "okay";
            compatible = "rockchip,dw-hdmi-audio";
            #sound-dai-cells = <0>;
      };

一套是DRM标准的HDMI 框架，

hdmi: hdmi@ff940000 {
            compatible = "rockchip,rk3399-dw-hdmi";
……
#address-cells = <1>;
#size-cells = <0>;
#sound-dai-cells = <0>;
};
hdmi_sound: hdmi-sound {
            status = "okay";
            compatible = "simple-audio-card";
            simple-audio-card,format = "i2s";
            simple-audio-card,mclk-fs = <256>;
            simple-audio-card,name = "rockchip,hdmi";
            simple-audio-card,cpu {
                     sound-dai = <&i2s2>;
            };
            simple-audio-card,codec {
                     sound-dai = <&hdmi>;
            };
      };
最后一套是
&hdmi_dp_sound {
status = "okay";
};

hdmi_dp_sound: hdmi-dp-sound {
  status = "disabled";
  compatible = "rockchip,rk3399-hdmi-dp";
  rockchip,cpu = <&i2s2>;
  rockchip,codec = <&hdmi>, <&cdn_dp>;
};

Njzy_Njzy · 发表于 2018-8-10 15:30:41

ding