u-boot/arch/arm/dts/hihope-rev4.dtsi

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree Source for the HiHope RZ/G2H Rev.4.0 and
 * HiHope RZ/G2[MN] Rev.3.0/4.0 main board common parts
 *
 * Copyright (C) 2021 Renesas Electronics Corp.
 */

#include <dt-bindings/gpio/gpio.h>
#include "hihope-common.dtsi"

/ {
	audio_clkout: audio-clkout {
		/*
		 * This is same as <&rcar_sound 0>
		 * but needed to avoid cs2000/rcar_sound probe dead-lock
		 */
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <12288000>;
	};

	wlan_en_reg: regulator-wlan_en {
		compatible = "regulator-fixed";
		regulator-name = "wlan-en-regulator";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		startup-delay-us = <70000>;

		gpio = <&gpio4 6 GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

	x1801_clk: x1801-clock {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <24576000>;
	};
};

&hscif0 {
	bluetooth {
		compatible = "ti,wl1837-st";
		enable-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
	};
};

&i2c2 {
	pinctrl-0 = <&i2c2_pins>;
	pinctrl-names = "default";
	status = "okay";

	cs2000: clk_multiplier@4f {
		#clock-cells = <0>;
		compatible = "cirrus,cs2000-cp";
		reg = <0x4f>;
		clocks = <&audio_clkout>, <&x1801_clk>;
		clock-names = "clk_in", "ref_clk";

		assigned-clocks = <&cs2000>;
		assigned-clock-rates = <24576000>; /* 1/1 divide */
	};
};

&pfc {
	i2c2_pins: i2c2 {
		groups = "i2c2_a";
		function = "i2c2";
	};

	sound_clk_pins: sound_clk {
		groups = "audio_clk_a_a", "audio_clk_b_a", "audio_clkout_a";
		function = "audio_clk";
	};

	sound_pins: sound {
		groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data_a";
		function = "ssi";
	};
};

&rcar_sound {
	pinctrl-0 = <&sound_pins &sound_clk_pins>;
	pinctrl-names = "default";
	status = "okay";

	/* Single DAI */
	#sound-dai-cells = <0>;

	/* audio_clkout0/1/2/3 */
	#clock-cells = <1>;
	clock-frequency = <12288000 11289600>;

	/* update <audio_clk_b> to <cs2000> */
	clocks = <&cpg CPG_MOD 1005>,
		 <&cpg CPG_MOD 1006>, <&cpg CPG_MOD 1007>,
		 <&cpg CPG_MOD 1008>, <&cpg CPG_MOD 1009>,
		 <&cpg CPG_MOD 1010>, <&cpg CPG_MOD 1011>,
		 <&cpg CPG_MOD 1012>, <&cpg CPG_MOD 1013>,
		 <&cpg CPG_MOD 1014>, <&cpg CPG_MOD 1015>,
		 <&cpg CPG_MOD 1022>, <&cpg CPG_MOD 1023>,
		 <&cpg CPG_MOD 1024>, <&cpg CPG_MOD 1025>,
		 <&cpg CPG_MOD 1026>, <&cpg CPG_MOD 1027>,
		 <&cpg CPG_MOD 1028>, <&cpg CPG_MOD 1029>,
		 <&cpg CPG_MOD 1030>, <&cpg CPG_MOD 1031>,
		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
		 <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
		 <&audio_clk_a>, <&cs2000>,
		 <&audio_clk_c>,
		 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;

	rsnd_port: port {
		rsnd_endpoint: endpoint {
			remote-endpoint = <&dw_hdmi0_snd_in>;

			dai-format = "i2s";
			bitclock-master = <&rsnd_endpoint>;
			frame-master = <&rsnd_endpoint>;

			playback = <&ssi2>;
		};
	};
};