arch/arm/boot/dts/qcom/qcom-apq8074-dragonboard.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/qcom/qcom-apq8074-dragonboard.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/qcom/qcom-apq8074-dragonboard.dts
Extension
.dts
Size
8768 bytes
Lines
480
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
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
#include "qcom-msm8974.dtsi"
#include "pm8841.dtsi"
#include "pm8941.dtsi"

/delete-node/ &mpss_region;

/ {
	model = "Qualcomm APQ8074 Dragonboard";
	compatible = "qcom,apq8074-dragonboard", "qcom,apq8074";

	aliases {
		serial0 = &blsp1_uart2;
		usid0 = &pm8941_0;
		usid4 = &pm8841_0;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	gpio-keys {
		compatible = "gpio-keys";
		autorepeat;

		pinctrl-0 = <&msm_keys_default>;
		pinctrl-names = "default";

		button-volup {
			label = "Volume Up";
			linux,code = <KEY_VOLUMEUP>;
			gpios = <&pm8941_gpios 5 GPIO_ACTIVE_LOW>;
		};

		button-general {
			label = "General";
			linux,code = <KEY_PROG1>;
			gpios = <&pm8941_gpios 23 GPIO_ACTIVE_LOW>;
		};
	};

	reserved-memory {
		mpss_region: mpss@ac00000 {
			reg = <0x0ac00000 0x2500000>;
			no-map;
		};
	};

	vreg_boost: vreg-boost {
		compatible = "regulator-fixed";

		regulator-name = "vreg-boost";
		regulator-min-microvolt = <3150000>;
		regulator-max-microvolt = <3150000>;

		regulator-always-on;
		regulator-boot-on;

		gpio = <&pm8941_gpios 21 GPIO_ACTIVE_HIGH>;
		enable-active-high;

		pinctrl-names = "default";
		pinctrl-0 = <&boost_bypass_n_pin>;
	};

	vreg_vph_pwr: vreg-vph-pwr {

Annotation

Implementation Notes