arch/arm/boot/dts/marvell/armada-xp-crs305-1g-4s.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/marvell/armada-xp-crs305-1g-4s.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/marvell/armada-xp-crs305-1g-4s.dtsi
Extension
.dtsi
Size
2187 bytes
Lines
105
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 CRS305-1G-4S board
 *
 * Copyright (C) 2016 Allied Telesis Labs
 * Copyright (C) 2020 Sartura Ltd.
 *
 * Based on armada-xp-db.dts
 *
 * Note: this Device Tree assumes that the bootloader has remapped the
 * internal registers to 0xf1000000 (instead of the default
 * 0xd0000000). The 0xf1000000 is the default used by the recent,
 * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier
 * boards were delivered with an older version of the bootloader that
 * left internal registers mapped at 0xd0000000. If you are in this
 * situation, you should either update your bootloader (preferred
 * solution) or the below Device Tree should be adjusted.
 */

/dts-v1/;
#include "armada-xp-98dx3236.dtsi"

/ {
	model = "CRS305-1G-4S+";
	compatible = "mikrotik,crs305-1g-4s", "marvell,armadaxp-98dx3236", "marvell,armada-370-xp";

	chosen {
		bootargs = "console=ttyS0,115200 earlyprintk";
	};

	memory {
		device_type = "memory";
		reg = <0 0x00000000 0 0x20000000>; /* 512 MB */
	};
};

&L2 {
	arm,parity-enable;
	marvell,ecc-enable;
};

&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>;
};

&uart0 {
	status = "okay";
};

&uart1 {
	status = "okay";
};

Annotation

Implementation Notes