3 This device supports I2C mode.
7 - compatible : "asahi-kasei,ak4458" or "asahi-kasei,ak4497"
8 - reg : The I2C address of the device for I2C
11 - reset-gpios: A GPIO specifier for the power down & reset pin
12 - mute-gpios: A GPIO specifier for the soft mute pin
18 compatible = "asahi-kasei,ak4458";
20 reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>
21 mute-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>