arch/arm/boot/dts/samsung/exynos-mfc-reserved-memory.dtsi

File Facts

System

Linux kernel

Corpus path

arch/arm/boot/dts/samsung/exynos-mfc-reserved-memory.dtsi

Extension

.dtsi

Size

580 bytes

Lines

33

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.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Samsung's Exynos SoC MFC (Video Codec) reserved memory common definition.
 *
 * Copyright (c) 2016 Samsung Electronics Co., Ltd
 */

/ {
	reserved-memory {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;

		mfc_left: region-mfc-left {
			compatible = "shared-dma-pool";
			no-map;
			size = <0x2400000>;
			alignment = <0x100000>;
		};

		mfc_right: region-mfc-right {
			compatible = "shared-dma-pool";
			no-map;
			size = <0x800000>;
			alignment = <0x100000>;
		};
	};
};

&mfc {
	memory-region = <&mfc_left>, <&mfc_right>;
};

Annotation

• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.