rpi-i2s-audio/rpi-i2s-mic.dts at master · PaulCreaserML/rpi-i2s-audio · GitHub

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// Definitions for the ugreen dabboard I2S
/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&i2s_clk_producer>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@1 {
		target-path = "/";
		__overlay__ {
			dmic_codec: dmic-codec {
				#sound-dai-cells = <0>;
				compatible = "dmic-codec";
				status = "okay";
			};
		};
	};

	fragment@2 {
		target = <&sound>;
		sound_overlay: __overlay__ {
			compatible = "simple-audio-card";
			simple-audio-card,format = "i2s";
			simple-audio-card,name = "mic";
			simple-audio-card,bitclock-slave = <&dailink0_slave>;
			simple-audio-card,frame-slave = <&dailink0_slave>;
			simple-audio-card,widgets = "Microphone", "Microphone Jack";
			status = "okay";
			simple-audio-card,cpu {
				sound-dai = <&i2s_clk_producer>;
                    		dai-tdm-slot-width = <32>;
                    		dai-tdm-slot-num   = <2>;
			};
			dailink0_slave: simple-audio-card,codec {
				#sound-dai-cells = <0>;
				sound-dai = <&dmic_codec>;
			};

		};
	};

	__overrides__ {
		card-name = <&sound_overlay>,"simple-audio-card,name";
	};
};