全志T527 音频适配
移植tlv320aic3111音频驱动
1.第一步，修改dts设备树，在设备树中添加有关音频芯片的硬件资源。因为板子跟音频芯片采用的twin连接，tlv320aic31xx节点地址为18，在twi中添加如下信息
tlv320aic31xx: tlv320aic31xx@18 {
#sound-dai-cells = <0>;
compatible = "ti,tlv320aic3x";
reg = <0x18>;
ai31xx-micbias-vg = <3>;
AVDD-supply = <®_pio3_3>;
IOVDD-supply = <®_pio3_3>;
DVDD-supply = <®_pio1_8>;
HPVDD-supply = <®_pio3_3>;
SPRVDD-supply = <®_pio3_3>;
SPLVDD-supply = <®_pio3_3>;
gpio-pins = <&pio PL 6 GPIO_ACTIVE_HIGH>, <&pio PL 7 GPIO_ACTIVE_HIGH>;
status = "okay";
};
2. 适配