pisound-overlay.dts

/*
 * Pisound Linux kernel module.
 * Copyright (C) 2016-2017  Vilniaus Blokas UAB, https://blokas.io/pisound
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 2 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&spi0>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@1 {
		target = <&spidev0>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@2 {
		target = <&spidev1>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@3 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;

			pisound_spi: pisound_spi@0{
				compatible = "blokaslabs,pisound-spi";
				reg = <0>;
				pinctrl-names = "default";
				pinctrl-0 = <&spi0_pins>;
				spi-max-frequency = <1000000>;
			};
		};
	};

	fragment@4 {
		target-path = "/";
		__overlay__ {
			pcm5102a-codec {
				#sound-dai-cells = <0>;
				compatible = "ti,pcm5102a";
				status = "okay";
			};
		};
	};

	fragment@5 {
		target = <&sound>;
		__overlay__ {
			compatible = "blokaslabs,pisound";
			i2s-controller = <&i2s>;
			status = "okay";

			pinctrl-0 = <&pisound_button_pins>;

			osr-gpios =
				<&gpio 13 GPIO_ACTIVE_HIGH>,
				<&gpio 26 GPIO_ACTIVE_HIGH>,
				<&gpio 16 GPIO_ACTIVE_HIGH>;

			reset-gpios =
				<&gpio 12 GPIO_ACTIVE_HIGH>,
				<&gpio 24 GPIO_ACTIVE_HIGH>;

			data_available-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;

			button-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
		};
	};

	fragment@6 {
		target = <&gpio>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&pisound_button_pins>;

			pisound_button_pins: pisound_button_pins {
				brcm,pins = <17>;
				brcm,function = <0>; // Input
				brcm,pull = <2>; // Pull-Up
			};
		};
	};

	fragment@7 {
		target = <&i2s>;
		__overlay__ {
			status = "okay";
		};
	};
};