arch/arm/boot/dts/arm/integratorap-im-pd1.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/arm/integratorap-im-pd1.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/arm/integratorap-im-pd1.dts
Extension
.dts
Size
6094 bytes
Lines
276
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree for the ARM Integrator/AP platform
 * with the IM-PD1 example logical module mounted.
 */

#include "integratorap.dts"

/ {
	model = "ARM Integrator/AP with IM-PD1";
	compatible = "arm,integrator-ap";

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

		impd1_ram: vram@c2000000 {
			/* 1 MB of designated video RAM on the IM-PD1 */
			compatible = "shared-dma-pool";
			reg = <0xc2000000 0x00100000>;
			no-map;
		};
	};
};

&lm0 {
	syscon@0 {
		compatible = "arm,im-pd1-syscon", "syscon";
		reg = <0x00000000 0x1000>;
		ranges;
		#address-cells = <1>;
		#size-cells = <1>;

		vco1: clock-controller@0 {
			compatible = "arm,impd1-vco1";
			reg = <0x00 0x04>;
			#clock-cells = <0>;
			lock-offset = <0x08>;
			vco-offset = <0x00>;
			clocks = <&sysclk>;
			clock-output-names = "IM-PD1-VCO1";
		};

		vco2: clock-controller@4 {
			compatible = "arm,impd1-vco2";
			reg = <0x04 0x04>;
			#clock-cells = <0>;
			lock-offset = <0x08>;
			vco-offset = <0x04>;
			clocks = <&sysclk>;
			clock-output-names = "IM-PD1-VCO2";
		};
	};

	/* Also used for the Smart Card Interface SCI */
	impd1_uartclk: clock-uart {
		compatible = "fixed-factor-clock";
		#clock-cells = <0>;
		clock-div = <4>;
		clock-mult = <1>;
		clocks = <&vco2>;
		clock-output-names = "VCO2_DIV4";
	};

	/* For the SSP the clock is divided by 64 */
	impd1_sspclk: clock-ssp {
		compatible = "fixed-factor-clock";
		#clock-cells = <0>;
		clock-div = <64>;

Annotation

Implementation Notes