arch/arm/boot/dts/marvell/kirkwood-b3.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/marvell/kirkwood-b3.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/marvell/kirkwood-b3.dts
Extension
.dts
Size
3744 bytes
Lines
196
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 file for Excito Bubba B3
 *
 * Copyright (C) 2013, Andrew Lunn <andrew@lunn.ch>
 *
 *
 * Note: This requires a new'ish version of u-boot, which disables the
 * L2 cache. If your B3 silently fails to boot, u-boot is probably too
 * old. Either upgrade, or consider the following email:
 *
 * https://lists.debian.org/debian-arm/2012/08/msg00128.html
 */

/dts-v1/;

#include "kirkwood.dtsi"
#include "kirkwood-6281.dtsi"

/ {
	model = "Excito B3";
	compatible = "excito,b3", "marvell,kirkwood-88f6281", "marvell,kirkwood";
	memory { /* 512 MB */
		device_type = "memory";
		reg = <0x00000000 0x20000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8 earlyprintk";
		stdout-path = &uart0;
	};

	ocp@f1000000 {
		pinctrl: pin-controller@10000 {
			pmx_button_power: pmx-button-power {
				marvell,pins = "mpp39";
				marvell,function = "gpio";
			};
			pmx_led_green: pmx-led-green {
				marvell,pins = "mpp38";
				marvell,function = "gpio";
			};
			pmx_led_red: pmx-led-red {
				marvell,pins = "mpp41";
				marvell,function = "gpio";
			};
			pmx_led_blue: pmx-led-blue {
				marvell,pins = "mpp42";
				marvell,function = "gpio";
			};
			pmx_beeper: pmx-beeper {
				marvell,pins = "mpp40";
				marvell,function = "gpio";
			};
		};

		spi@10600 {
			status = "okay";

			m25p16@0 {
				#address-cells = <1>;
				#size-cells = <1>;
				compatible = "st,m25p16", "jedec,spi-nor";
				reg = <0>;
				spi-max-frequency = <40000000>;
				mode = <0>;

				partition@0 {
					reg = <0x0 0xc0000>;
					label = "u-boot";

Annotation

Implementation Notes