arch/arm64/boot/dts/renesas/r8a779a0.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/r8a779a0.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/r8a779a0.dtsi
Extension
.dtsi
Size
83910 bytes
Lines
3285
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
/*
 * Device Tree Source for the R-Car V3U (R8A779A0) SoC
 *
 * Copyright (C) 2020 Renesas Electronics Corp.
 */

#include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/r8a779a0-sysc.h>

/ {
	compatible = "renesas,r8a779a0";
	#address-cells = <2>;
	#size-cells = <2>;
	interrupt-parent = <&gic>;

	/* External CAN clock - to be overridden by boards that provide it */
	can_clk: can {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <0>;
	};

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		a76_0: cpu@0 {
			compatible = "arm,cortex-a76";
			reg = <0>;
			device_type = "cpu";
			power-domains = <&sysc R8A779A0_PD_A1E0D0C0>;
			next-level-cache = <&L3_CA76_0>;
			clocks = <&cpg CPG_CORE R8A779A0_CLK_Z0>;
		};

		L3_CA76_0: cache-controller-0 {
			compatible = "cache";
			power-domains = <&sysc R8A779A0_PD_A2E0D0>;
			cache-unified;
			cache-level = <3>;
		};
	};

	extal_clk: extal {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		/* This value must be overridden by the board */
		clock-frequency = <0>;
		bootph-all;
	};

	extalr_clk: extalr {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		/* This value must be overridden by the board */
		clock-frequency = <0>;
		bootph-all;
	};

	pmu_a76 {
		compatible = "arm,cortex-a76-pmu";
		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW>;
	};

	/* External SCIF clock - to be overridden by boards that provide it */
	scif_clk: scif {
		compatible = "fixed-clock";
		#clock-cells = <0>;

Annotation

Implementation Notes