arch/arm/boot/dts/arm/arm-realview-pbx-a9.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/arm/arm-realview-pbx-a9.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/arm/arm-realview-pbx-a9.dts
Extension
.dts
Size
5036 bytes
Lines
229
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

/dts-v1/;
#include "arm-realview-pbx.dtsi"

/ {
	/*
	 * This is the RealView Platform Baseboard Explore for Cortex-A9
	 * (HBI0182 + HBI0183) as described in ARM DUI 0440B
	 */
	model = "ARM RealView Platform Baseboard Explore for Cortex-A9";
	arm,hbi = <0x182>;

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;
		enable-method = "arm,realview-smp";

		cpu-map {
			cluster0 {
				core0 {
					cpu = <&CPU0>;
				};
				core1 {
					cpu = <&CPU1>;
				};
			};
		};
		CPU0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a9";
			reg = <0x0>;
			next-level-cache = <&L2>;
		};
		CPU1: cpu@1 {
			device_type = "cpu";
			compatible = "arm,cortex-a9";
			reg = <0x1>;
			next-level-cache = <&L2>;
		};
	};

	L2: cache-controller {
		compatible = "arm,pl310-cache";
		reg = <0x1f002000 0x1000>;
		cache-unified;
		cache-level = <2>;
		/*
		 * Override default cache size, sets and
		 * associativity as these may be erroneously set
		 * up by boot loader(s).
		 */
		cache-size = <131072>; // 128KB
		cache-sets = <512>;
		cache-line-size = <32>;
		arm,parity-disable;
		arm,tag-latency = <1 1 1>;
		arm,data-latency = <1 1 1>;
	};

	scu: scu@1f000000 {
		compatible = "arm,cortex-a9-scu";
		reg = <0x1f000000 0x100>;
	};

	twd_timer: timer@1f000600 {
		compatible = "arm,cortex-a9-twd-timer";
		reg = <0x1f000600 0x20>;
		interrupt-parent = <&intc>;
		interrupts = <1 13 0xf04>;
	};

Annotation

Implementation Notes