tlv320_overlay.dts

/dts-v1/;
/plugin/;

/ {
    compatible = "brcm,bcm2835";

    fragment@0 {
        target = <&i2s>;
        overlay {
            status = "okay";
            #sound-dai-cells = <0>;
        };
    };

    fragment@1 {
        target-path = "/";  /* just а nodelabel definition /
        overlay {
            adc3140_mclk: adc3140-mclk {
                compatible = "fixed-clock";
                #clock-cells = <0>;
                clock-frequency = <12288000>;  / 12.288 MHz /
            };
        };
    };

    fragment@2 {
        target = <&sound>;
        overlay {
            compatible = "simple-audio-card";
            simple-audio-card,name = "TLV320ADC3140";
            simple-audio-card,format = "dsp_a";      / DSP_A = 4-channel TDM /
            simple-audio-card,dai-tdm-slot-num = <4>;
            simple-audio-card,dai-tdm-slot-width = <32>;
            simple-audio-card,bitclock-master = <&adc3140>;
            simple-audio-card,frame-master = <&adc3140>;

            simple-audio-card,cpu {
                sound-dai = <&i2s>;
            };

            simple-audio-card,codec {
                sound-dai = <&adc3140>;
                clocks = <&adc3140_mclk>;
                #clock-cells = <0>;
            };
        };
    };

    fragment@3 {
        target = <&i2c1>;   / or &i2c0 depending on wire setup /
        overlay {
            status = "okay";
        };
    };

    fragment@4 {
        / PHY node for the TLV320ADC3140 /
        target-path = "/";
        overlay {
            adc3140: tlv320adc3140@4c {
                compatible = "ti,tlv320adc3140";
                reg = <0x4c>;                / I²C adress /
                #sound-dai-cells = <0>;
                ti,use-internal-areg;        / internal LDO /
                ti,mic-bias-source = <6>;    / MICBIAS to pin 6 */
                iov-supply = <&reg_3v3>;
                ldoin-supply = <&reg_3v3>;
            };
        };