arch/arm64/boot/dts/amlogic/meson-gx.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/amlogic/meson-gx.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/amlogic/meson-gx.dtsi
Extension
.dtsi
Size
17113 bytes
Lines
704
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) 2016 Andreas Färber
 *
 * Copyright (c) 2016 BayLibre, SAS.
 * Author: Neil Armstrong <narmstrong@baylibre.com>
 *
 * Copyright (c) 2016 Endless Computers, Inc.
 * Author: Carlo Caione <carlo@endlessm.com>
 */

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/meson-gxbb-power.h>
#include <dt-bindings/thermal/thermal.h>

/ {
	interrupt-parent = <&gic>;
	#address-cells = <2>;
	#size-cells = <2>;

	aliases {
		mmc0 = &sd_emmc_b; /* SD card */
		mmc1 = &sd_emmc_c; /* eMMC */
		mmc2 = &sd_emmc_a; /* SDIO */
	};

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

		/* 16 MiB reserved for Hardware ROM Firmware */
		hwrom_reserved: hwrom@0 {
			reg = <0x0 0x0 0x0 0x1000000>;
			no-map;
		};

		/* 2 MiB reserved for ARM Trusted Firmware (BL31) */
		secmon_reserved: secmon@10000000 {
			reg = <0x0 0x10000000 0x0 0x200000>;
			no-map;
		};

		/* Alternate 3 MiB reserved for ARM Trusted Firmware (BL31) */
		secmon_reserved_alt: secmon@5000000 {
			reg = <0x0 0x05000000 0x0 0x300000>;
			no-map;
		};

		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
		secmon_reserved_bl32: secmon@5300000 {
			reg = <0x0 0x05300000 0x0 0x2000000>;
			no-map;
		};

		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			size = <0x0 0x10000000>;
			alignment = <0x0 0x400000>;
			linux,cma-default;
		};
	};

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

Annotation

Implementation Notes