arch/arm64/boot/dts/renesas/r8a779md-geist.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/r8a779md-geist.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/r8a779md-geist.dts
Extension
.dts
Size
13239 bytes
Lines
721
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 Geist board with R-Car M3Le
 *
 * Copyright (C) 2025-2026 Renesas Electronics Corp.
 */

/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include "r8a779md.dtsi"

/ {
	model = "Renesas Geist board based on r8a779md";
	compatible = "renesas,geist", "renesas,r8a779md", "renesas,r8a77965";

	aliases {
		serial0 = &scif2;
		serial1 = &hscif1;
		ethernet0 = &avb;
		mmc0 = &sdhi2;
		mmc1 = &sdhi0;
	};

	audio_clkout: audio-clkout {
		/*
		 * This is same as <&rcar_sound 0>
		 * but needed to avoid cs2500/rcar_sound probe dead-lock
		 */
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <12288000>;
	};

	backlight: backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm1 0 50000>;

		brightness-levels = <256 128 64 16 8 4 0>;
		default-brightness-level = <6>;

		power-supply = <&reg_12v>;
		enable-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
	};

	chosen {
		bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
		stdout-path = "serial0:115200n8";
	};

	cvbs-in {
		compatible = "composite-video-connector";
		label = "CVBS IN";

		port {
			cvbs_con: endpoint {
				remote-endpoint = <&adv7482_ain7>;
			};
		};
	};

	hdmi-in {
		compatible = "hdmi-connector";
		label = "HDMI IN";
		type = "a";

		port {
			hdmi_in_con: endpoint {
				remote-endpoint = <&adv7482_hdmi>;
			};

Annotation

Implementation Notes