I2S alsa device drivers for the popular MIPS ar9331 SOC (Carambola2, Arduino Yun...)
It is implemented as a openwrt package and can be compiled with Linux Kernel Ver. 3.14.xx.
增加了ar9331对于wm8918(wm8904)的支持 注意：因为ar9331里面没有i2c控制器，所以我修改了mach-ap121.c文件，里面增加gpio-i2c， SDA = gpio17 SCL = gpio11