Building toward the overlay for Podtique1.

BB-ENABLE-PRU.dts

/dts-v1/;
/plugin/;

/ {
    compatible = "ti,beaglebone-black";

    /* identification */
    part-number = "BB-ENABLE-PRU";

    /* version */
    version = "00A0";

	/* state the resources this cape uses */
	exclusive-use =
		/* the pin header uses */
		"P9.31",	/* mcasp0: mcasp0_aclkx */
		/* "P9.30",	mcasp0: mcasp0_axr0 */
		"P9.29",	/* mcasp0: mcasp0_fsx */
		"P9.28",	/* mcasp0: mcasp0_axr2 */
		"P9.25",	/* mcasp0: mcasp0_ahclkx */
		
		"P9.39",	/* AIN0 */
		"P9.40",	/* AIN1 */
		"P9.37",	/* AIN2 */
		
		/* the hardware ip uses */
		"gpio1_18", "gpio1_19",
		"mcasp0",
		"tscadc";

	fragment@0 {
		target = <&am33xx_pinmux>;
		__overlay__ {

			i2c2_pins: pinmux_i2c2_pins {
				pinctrl-single,pins = <
					0x150 0x72 	/*spi0_scl.i2c2_sda,SLEWCTRL_SLOW | INPUT_PULLUP |MODE2*/
					0x154 0x72	/*spi0_d0.i2c2_scl,SLEWCTRL_SLOW | INPUT_PULLUP | MODE2*/
				>;
			};

			podtique_audio_pins: pinmux_podtique_audio_pins {
				pinctrl-single,pins = <
					0x1ac 0x00      /* mcasp0_ahclkx,             MODE0 | INPUT */
					0x19c 0x22		/* mcasp0_ahclkr, */
					0x194 0x20      /* mcasp0_fsx,         	      MODE0 | OUTPUT  */
					0x190 0x20      /* mcasp0_aclkr.mcasp0_aclkx, MODE0 | OUTPUT_PULLDOWN */
					0x198 0x20
				>;
			};
		};
	};

	fragment@1 {
		target = <&i2c2>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			clock-frequency = <100000>;
			status = "okay";
			pinctrl-names = "default";
			pinctrl-0 = <&i2c2_pins>;


			tlv320aic3104: tlv320aic3104@18 {
				#sound-dai-cells = <0>;
				compatible = "ti,tlv320aic3104";
				reg = <0x18>;

				AVDD-supply = <&ldo4_reg>;
				IOVDD-supply = <&ldo4_reg>;
				DRVDD-supply = <&ldo4_reg>;
				DVDD-supply = <&ldo4_reg>;
			};
		};
	};

	fragment@2 {
		target = <&mcasp0>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&podtique_audio_pins>;

			status = "okay";

			op-mode = <0>;          /* MCASP_IIS_MODE */
			tdm-slots = <2>;
			num-serializer = <16>;
			serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
				2 0 1 0
				0 0 0 0
				0 0 0 0
				0 0 0 0
			>;
			tx-num-evt = <1>;
			rx-num-evt = <1>;
		};
	};

	fragment@3 {
		target-path="/";
		__overlay__ {
			sound {
				compatible = "lz-podtique";
				lz-podtique,name = "Podtique 1";
				lz-podtique,model = "PT-1";
				simple-audio-card,widgets =
					"Line";
				lz-podtique,audio-routing =
					"Line Out",			"LLOUT",
					"Line Out",			"RLOUT";
				lz-podtique,format = "dsp_b";
				lz-podtique,bitclock-master = <&sound_master>;
				lz-podtique,frame-master = <&sound_master>;
				lz-podtique,bitclock-inversion;

				lz-podtique,cpu {
					sound-dai = <&mcasp0>;
				};

				sound_master: lz-podtique,codec {
					sound-dai = <&tlv320aic3104>;
					system-clock-frequency = <12000000>;
				};
			};
		};

	};
	
	fragment@4 {
		target = <&tscadc>;
		__overlay__ {

			status = "okay";
			adc {
				ti,adc-channels = <0 1 2>;
			};
		};
	};
	
	fragment@5 {         // Enable the PRUSS
		target = <&pruss>;
		__overlay__ {
			status = "okay";
		};
	};
	
};