RK3399-HDMI音频:

背景
Platform： RK3399
OS： Android7.1.2
Kernel： v4.4.103
主要针对HDMI-OUT， HDMI-IN这里不做讨论

内核HDMI声卡驱动
HDMI相关的声卡驱动官方已支持，只需修改DTS配置：
dts:

CODE
 hdmi_sound: hdmi-sound {
     status = "disabled";
     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>;
     };
 };

........

作者: Shell