arch/arm64/boot/dts/realtek/rtd1920s-smallville.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/realtek/rtd1920s-smallville.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/realtek/rtd1920s-smallville.dtsi
Extension
.dtsi
Size
2484 bytes
Lines
129
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
/*
 * Realtek RTD1920S Smallville EVB
 *
 * Copyright (c) 2024 Realtek Semiconductor Corp.
 */

/dts-v1/;

#include <dt-bindings/thermal/thermal.h>
#include "rtd1920.dtsi"

/ {
	chosen {
		stdout-path = "serial0:460800n8";
	};

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

		protected_mem: protected-mem@50000 {
			reg = <0x0 0x50000 0x0 0xbf0000>;
			no-map;
		};

		metadata: metadata@c40000 {
			reg = <0x0 0xc40000 0x0 0x3c4000>;
			no-map;
		};

		linux,cma {
			compatible = "shared-dma-pool";
			alignment = <0x0 0x400000>;
			alloc-ranges = <0x0 0x0 0x0 0x20000000>;
			size = <0x0 0x2000000>;
			reusable;
			linux,cma-default;
		};
	};

	cpu_opps: opp-table-cpu {
		compatible = "operating-points-v2";
		opp-shared;

		opp800: opp-800000000 {
			opp-hz = /bits/ 64 <800000000>;
			opp-microvolt = <830000 830000 1100000>;
		};

		opp900: opp-900000000 {
			opp-hz = /bits/ 64 <900000000>;
			opp-microvolt = <850000 850000 1100000>;
		};

		opp1000: opp-1000000000 {
			opp-hz = /bits/ 64 <1000000000>;
			opp-microvolt = <870000 870000 1100000>;
		};

		opp1100: opp-1100000000 {
			opp-hz = /bits/ 64 <1100000000>;
			opp-microvolt = <890000 890000 1100000>;
		};

		opp1200: opp-1200000000 {
			opp-hz = /bits/ 64 <1200000000>;
			opp-microvolt = <910000 910000 1100000>;
		};

Annotation

Implementation Notes