arch/arm64/boot/dts/renesas/gray-hawk-single.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/gray-hawk-single.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/gray-hawk-single.dtsi
Extension
.dtsi
Size
14508 bytes
Lines
869
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/*
 * Device Tree Source for the Gray Hawk Single board
 *
 * Copyright (C) 2023 Renesas Electronics Corp.
 * Copyright (C) 2024-2025 Glider bv
 */
/*
 * [How to use Sound]
 *
 * Because R-Car V4M has only 1 SSI, it cannot handle both Playback/Capture
 * at the same time. You need to switch the direction which is controlled
 * by the GP0_01 pin via amixer.
 *
 * Playback (CN9500)
 *	> amixer set "MUX" "Playback"	// for GP0_01
 *	> amixer set "DAC 1" 85%
 *	> aplay xxx.wav
 *
 * Capture (CN9501)
 *	> amixer set "MUX" "Capture"	// for GP0_01
 *	> amixer set "Mic 1" 80%
 *	> amixer set "ADC 1" on
 *	> amixer set 'ADC 1' 80%
 *	> arecord xxx hoge.wav
 */

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/media/video-interfaces.h>

/ {
	model = "Renesas Gray Hawk Single board";
	compatible = "renesas,gray-hawk-single";

	aliases {
		i2c0 = &i2c0;
		i2c1 = &i2c1;
		i2c2 = &i2c2;
		i2c3 = &i2c3;
		serial0 = &hscif0;
		serial1 = &hscif2;
		ethernet0 = &avb0;
		ethernet1 = &avb1;
		ethernet2 = &avb2;
	};

	can_transceiver0: can-phy0 {
		compatible = "nxp,tjr1443";
		#phy-cells = <0>;
		enable-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
		max-bitrate = <5000000>;
	};

	chosen {
		bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
		stdout-path = "serial0:921600n8";
	};

	sn65dsi86_refclk: clk-x6 {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <38400000>;
	};

	keys {
		compatible = "gpio-keys";

		pinctrl-0 = <&keys_pins>;

Annotation

Implementation Notes