3 This device supports I2C only.
7 - compatible : "realtek,rt5651".
9 - reg : The I2C address of the device.
13 - realtek,in2-differential
14 Boolean. Indicate MIC2 input are differential, rather than single-ended.
17 Boolean. true if dmic is used.
19 Pins on the device (for linking into audio routes) for RT5651:
37 compatible = "realtek,rt5651";
39 realtek,dmic-en = "true";
40 realtek,in2-diff = "false";