arch/arm/boot/dts/samsung/exynos4412-smdk4412.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/samsung/exynos4412-smdk4412.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/samsung/exynos4412-smdk4412.dts
Extension
.dts
Size
3336 bytes
Lines
183
Domain
Architecture Layer
Bucket
arch/arm
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
/*
 * Samsung's Exynos4412 based SMDK board device tree source
 *
 * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com
 *
 * Device tree source file for Samsung's SMDK4412 board which is based on
 * Samsung's Exynos4412 SoC.
 */

/dts-v1/;
#include "exynos4412.dtsi"
#include "exynos-mfc-reserved-memory.dtsi"

/ {
	model = "Samsung SMDK evaluation board based on Exynos4412";
	compatible = "samsung,smdk4412", "samsung,exynos4412", "samsung,exynos4";

	memory@40000000 {
		device_type = "memory";
		reg = <0x40000000 0x40000000>;
	};

	aliases {
		mmc0 = &sdhci_2;
	};

	chosen {
		bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M init=/linuxrc";
		stdout-path = "serial1:115200n8";
	};

	fixed-rate-clocks {
		xxti {
			compatible = "samsung,clock-xxti";
			clock-frequency = <0>;
		};

		xusbxti {
			compatible = "samsung,clock-xusbxti";
			clock-frequency = <24000000>;
		};

		pmic_ap_clk: pmic-ap-clk {
			/* Workaround for missing clock on PMIC */
			compatible = "fixed-clock";
			#clock-cells = <0>;
			clock-frequency = <32768>;
		};
	};
};

&cpu_thermal {
	cooling-maps {
		cooling_map0: map0 {
			/* Corresponds to 800MHz at freq_table */
			cooling-device = <&cpu0 7 7>, <&cpu1 7 7>,
					 <&cpu2 7 7>, <&cpu3 7 7>;
		};
		cooling_map1: map1 {
			/* Corresponds to 200MHz at freq_table */
			cooling-device = <&cpu0 13 13>, <&cpu1 13 13>,
					 <&cpu2 13 13>, <&cpu3 13 13>;
		};
	};
};

&keypad {
	samsung,keypad-num-rows = <3>;

Annotation

Implementation Notes