https://blog.faceutil.com/2020/03/23/sigmatel-stac9220-%ec%82%ac%ec%9a%b4%eb%93%9c-%eb%93%9c%eb%9d%bc%ec%9d%b4%eb%b2%84-sigmatel-stac9220-sound-driver-v1-0-mac-%d1%8a/