Brooklyn/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts

// Definitions for the Cirrus Logic Audio Card
/dts-v1/;
/plugin/;
#include <dt-bindings/pinctrl/bcm2835.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/mfd/arizona.h>

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&i2s>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@1 {
		target = <&gpio>;
		__overlay__ {
			wlf_5102_pins: wlf_5102_pins {
				brcm,pins = <17 22 27>;
				brcm,function = <
					BCM2835_FSEL_GPIO_OUT
					BCM2835_FSEL_GPIO_OUT
					BCM2835_FSEL_GPIO_IN
				>;
			};
			wlf_8804_pins: wlf_8804_pins {
				brcm,pins = <8>;
				brcm,function = <BCM2835_FSEL_GPIO_OUT>;
			};
		};
	};

	fragment@2 {
		target = <&spi0_cs_pins>;
		__overlay__ {
			brcm,pins = <7>;
			brcm,function = <BCM2835_FSEL_GPIO_OUT>;
		};
	};


	fragment@3 {
		target-path = "/";
		__overlay__ {
			rpi_cirrus_reg_1v8: rpi_cirrus_reg_1v8 {
				compatible = "regulator-fixed";
				regulator-name = "RPi-Cirrus 1v8";
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-always-on;
			};
		};
	};

	fragment@4 {
		target = <&spidev0>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@5 {
		target = <&spidev1>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@6 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			cs-gpios = <&gpio 7 GPIO_ACTIVE_LOW>;

			wm5102@0{
				compatible = "wlf,wm5102";
				reg = <0>;

				pinctrl-names = "default";
				pinctrl-0 = <&wlf_5102_pins>;

				spi-max-frequency = <500000>;

				interrupt-parent = <&gpio>;
				interrupts = <27 8>;
				interrupt-controller;
				#interrupt-cells = <2>;

				gpio-controller;
				#gpio-cells = <2>;

				LDOVDD-supply = <&rpi_cirrus_reg_1v8>;
				AVDD-supply = <&rpi_cirrus_reg_1v8>;
				DBVDD1-supply = <&rpi_cirrus_reg_1v8>;
				DBVDD2-supply = <&vdd_3v3_reg>;
				DBVDD3-supply = <&vdd_3v3_reg>;
				CPVDD-supply = <&rpi_cirrus_reg_1v8>;
				SPKVDDL-supply = <&vdd_5v0_reg>;
				SPKVDDR-supply = <&vdd_5v0_reg>;
				DCVDD-supply = <&arizona_ldo1>;

				reset-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
				wlf,ldoena = <&gpio 22 GPIO_ACTIVE_HIGH>;
				wlf,gpio-defaults = <
					ARIZONA_GP_DEFAULT
					ARIZONA_GP_DEFAULT
					ARIZONA_GP_DEFAULT
					ARIZONA_GP_DEFAULT
					ARIZONA_GP_DEFAULT
				>;
				wlf,micd-configs = <0 1 0>;
				wlf,dmic-ref = <
					ARIZONA_DMIC_MICVDD
					ARIZONA_DMIC_MICBIAS2
					ARIZONA_DMIC_MICVDD
					ARIZONA_DMIC_MICVDD
				>;
				wlf,inmode = <
					ARIZONA_INMODE_DIFF
					ARIZONA_INMODE_DMIC
					ARIZONA_INMODE_SE
					ARIZONA_INMODE_DIFF
				>;
				status = "okay";

				arizona_ldo1: ldo1 {
					regulator-name = "LDO1";
					// default constraints as in
					// arizona-ldo1.c
					regulator-min-microvolt = <1200000>;
					regulator-max-microvolt = <1800000>;
				};
			};
		};
	};

	fragment@7 {
		target = <&i2c1>;
		__overlay__ {
			status = "okay";
			#address-cells = <1>;
			#size-cells = <0>;

			wm8804@3b {
				compatible = "wlf,wm8804";
				reg = <0x3b>;
				status = "okay";

				pinctrl-names = "default";
				pinctrl-0 = <&wlf_8804_pins>;

				PVDD-supply = <&vdd_3v3_reg>;
				DVDD-supply = <&vdd_3v3_reg>;
				wlf,reset-gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
			};
		};
	};

	fragment@8 {
		target = <&sound>;
		__overlay__ {
			compatible = "wlf,rpi-cirrus";
			i2s-controller = <&i2s>;
			status = "okay";
		};
	};
};