arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
Extension
.dts
Size
11195 bytes
Lines
586
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
/*
 * Copyright (C) 2019 Stephan Gerhold
 */

/dts-v1/;

#include "msm8916-pm8916.dtsi"
#include "msm8916-modem-qdsp6.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>

/*
 * NOTE: The original firmware from Samsung can only boot ARM32 kernels.
 * Unfortunately, the firmware is signed and cannot be replaced easily.
 * There seems to be no way to boot ARM64 kernels on this device at the moment,
 * even though the hardware would support it.
 *
 * However, it is possible to use this device tree by compiling an ARM32 kernel
 * instead. For clarity and build testing this device tree is maintained next
 * to the other MSM8916 device trees. However, it is actually used through
 *   arch/arm/boot/dts/qcom-msm8916-samsung-serranove.dts
 */

/ {
	model = "Samsung Galaxy S4 Mini Value Edition";
	compatible = "samsung,serranove", "qcom,msm8916";
	chassis-type = "handset";

	aliases {
		mmc0 = &sdhc_1; /* eMMC */
		mmc1 = &sdhc_2; /* SD card */
		serial0 = &blsp_uart2;
	};

	chosen {
		stdout-path = "serial0";
	};

	reserved-memory {
		/* Additional memory used by Samsung firmware modifications */
		tz-apps@85500000 {
			reg = <0x0 0x85500000 0x0 0xb00000>;
			no-map;
		};
	};

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

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

		label = "GPIO Buttons";

		button-volume-up {
			label = "Volume Up";
			gpios = <&tlmm 107 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_VOLUMEUP>;
		};

		button-home {
			label = "Home";
			gpios = <&tlmm 109 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_HOMEPAGE>;
		};
	};

Annotation

Implementation Notes