arch/arm/boot/dts/marvell/armada-xp-openblocks-ax3-4.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/marvell/armada-xp-openblocks-ax3-4.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/marvell/armada-xp-openblocks-ax3-4.dts
Extension
.dts
Size
3915 bytes
Lines
210
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+ OR MIT)
/*
 * Device Tree file for OpenBlocks AX3-4 board
 *
 * Copyright (C) 2012 Marvell
 *
 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 */

/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include "armada-xp-mv78260.dtsi"

/ {
	model = "PlatHome OpenBlocks AX3-4 board";
	compatible = "plathome,openblocks-ax3-4", "marvell,armadaxp-mv78260", "marvell,armadaxp", "marvell,armada-370-xp";

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

	memory@0 {
		device_type = "memory";
		reg = <0 0x00000000 0 0x40000000>; /* 1 GB soldered on */
	};

	soc {
		ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000
			  MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
			  MBUS_ID(0x01, 0x2f) 0 0 0xe8000000 0x8000000
			  MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
			  MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000
			  MBUS_ID(0x0c, 0x04) 0 0 0xd1200000 0x100000>;

		devbus-bootcs {
			status = "okay";

			/* Device Bus parameters are required */

			/* Read parameters */
			devbus,bus-width    = <16>;
			devbus,turn-off-ps  = <60000>;
			devbus,badr-skew-ps = <0>;
			devbus,acc-first-ps = <124000>;
			devbus,acc-next-ps  = <248000>;
			devbus,rd-setup-ps  = <0>;
			devbus,rd-hold-ps   = <0>;

			/* Write parameters */
			devbus,sync-enable = <0>;
			devbus,wr-high-ps  = <60000>;
			devbus,wr-low-ps   = <60000>;
			devbus,ale-wr-ps   = <60000>;

			/* NOR 128 MiB */
			nor@0 {
				compatible = "cfi-flash";
				reg = <0 0x8000000>;
				bank-width = <2>;
			};
		};

		internal-regs {
			rtc@10300 {
				/* No crystal connected to the internal RTC */
				status = "disabled";
			};
			serial@12000 {
				status = "okay";

Annotation

Implementation Notes