WM8960 音频DAC芯片
Documentation/devicetree/bindings/sound/wm8960.txt

codec: wm8960@1a {
     compatible = "wlf,wm8960";
     reg = <0x1a>;
     clocks = <&clks IMX6UL_CLK_SAI2>;
     clock-names = "mclk";
     wlf,shared-lrclk;
};

sai2: sai@0202c000 { 
    2 compatible = "fsl,imx6ul-sai", 
    3 "fsl,imx6sx-sai"; 
    4 reg = <0x0202c000 0x4000>;
    5 interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
    6 clocks = <&clks IMX6UL_CLK_SAI2_IPG>,
    7 <&clks IMX6UL_CLK_DUMMY>,
    8 <&clks IMX6UL_CLK_SAI2>,
    9 <&clks 0>, <&clks 0>;
    10 clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
    11 dma-names = "rx", "tx";
    12 dmas = <&sdma 37 24 0>, <&sdma 38 24 0>;
    13 status = "disabled";
};

tinyplay /mnt/UDISK/audio/cn/network_connected.wav
tinymix set 58 1
tinymix set 19 1
tinymix set 20 1
tinymix set 45 1
tinymix set 49 1
tinymix set 13 50