example for dts:
		tas2770@41 {
			compatible = "ti,tas2770";
			reg = <0x41>;
			ti,reset-gpio = <&msmgpio 13 0>;
			ti,irq-gpio = <&msmgpio 59 0>;
			ti,asi-format = <0>; /* 0, i2S; 1, DSP;  */
			ti,ppg = <0>; /* 0, 0dB default; 1， enable -2dB */
			status = "ok";
		};