arch/arm64/boot/dts/mediatek/mt8195-demo.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/mediatek/mt8195-demo.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/mediatek/mt8195-demo.dts
Extension
.dts
Size
11894 bytes
Lines
556
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 OR MIT)
/*
 * Copyright (C) 2022 BayLibre, SAS.
 * Author: Fabien Parent <fparent@baylibre.com>
 */
/dts-v1/;

#include "mt8195.dtsi"
#include "mt6359.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/mt8195-pinfunc.h>
#include <dt-bindings/regulator/mediatek,mt6360-regulator.h>

/ {
	model = "MediaTek MT8195 demo board";
	compatible = "mediatek,mt8195-demo", "mediatek,mt8195";

	aliases {
		serial0 = &uart0;
	};

	chosen {
		stdout-path = "serial0:921600n8";
	};

	firmware {
		optee {
			compatible = "linaro,optee-tz";
			method = "smc";
		};
	};

	gpio-keys {
		compatible = "gpio-keys";
		pinctrl-names = "default";
		pinctrl-0 = <&gpio_keys_pins>;

		key-0 {
			gpios = <&pio 106 GPIO_ACTIVE_LOW>;
			label = "volume_up";
			linux,code = <KEY_VOLUMEUP>;
			wakeup-source;
			debounce-interval = <15>;
		};
	};

	memory@40000000 {
		device_type = "memory";
		reg = <0 0x40000000 0x2 0x00000000>;
	};

	reserved-memory {
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

		/*
		 * 12 MiB reserved for OP-TEE (BL32)
		 * +-----------------------+ 0x43e0_0000
		 * |      SHMEM 2MiB       |
		 * +-----------------------+ 0x43c0_0000
		 * |        | TA_RAM  8MiB |
		 * + TZDRAM +--------------+ 0x4340_0000
		 * |        | TEE_RAM 2MiB |
		 * +-----------------------+ 0x4320_0000
		 */
		optee_reserved: optee@43200000 {
			no-map;

Annotation

Implementation Notes