arch/arm/boot/dts/broadcom/bcm283x.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/broadcom/bcm283x.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/broadcom/bcm283x.dtsi
Extension
.dtsi
Size
12630 bytes
Lines
526
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

#include <dt-bindings/pinctrl/bcm2835.h>
#include <dt-bindings/clock/bcm2835.h>
#include <dt-bindings/clock/bcm2835-aux.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/soc/bcm2835-pm.h>

/* firmware-provided startup stubs live here, where the secondary CPUs are
 * spinning.
 */
/memreserve/ 0x00000000 0x00001000;

/* This include file covers the common peripherals and configuration between
 * bcm2835 and bcm2836 implementations, leaving the CPU configuration to
 * bcm2835.dtsi and bcm2836.dtsi.
 */

/ {
	compatible = "brcm,bcm2835";
	model = "BCM2835";
	#address-cells = <1>;
	#size-cells = <1>;

	aliases {
		serial0 = &uart0;
		serial1 = &uart1;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

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

		cma: linux,cma {
			compatible = "shared-dma-pool";
			size = <0x4000000>; /* 64MB */
			reusable;
			linux,cma-default;
		};
	};

	thermal-zones {
		cpu_thermal: cpu-thermal {
			polling-delay-passive = <0>;
			polling-delay = <1000>;

			trips {
				cpu-crit {
					temperature = <90000>;
					hysteresis = <0>;
					type = "critical";
				};
			};

			cooling-maps {
			};
		};
	};

	soc {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <1>;

		system_timer: timer@7e003000 {
			compatible = "brcm,bcm2835-system-timer";

Annotation

Implementation Notes