arch/arm/boot/dts/microchip/at91-cosino.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/microchip/at91-cosino.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/microchip/at91-cosino.dtsi
Extension
.dtsi
Size
2635 bytes
Lines
153
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-later
/*
 * at91-cosino.dtsi - Device Tree file for Cosino core module
 *
 * Copyright (C) 2013 - Rodolfo Giometti <giometti@linux.it>
 *			HCE Engineering
 *
 * Derived from at91sam9x5ek.dtsi by:
 *	Copyright (C) 2012 Atmel,
 *	2012 Nicolas Ferre <nicolas.ferre@atmel.com>
 */

#include "at91sam9g35.dtsi"

/ {
	model = "HCE Cosino core module";
	compatible = "hce,cosino", "atmel,at91sam9x5", "atmel,at91sam9";

	chosen {
		bootargs = "console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait";
	};

	memory@20000000 {
		reg = <0x20000000 0x8000000>;
	};

	clocks {
		slow_xtal {
			clock-frequency = <32768>;
		};

		main_xtal {
			clock-frequency = <12000000>;
		};
	};
};

&adc0 {
	atmel,adc-ts-wires = <4>;
	atmel,adc-ts-pressure-threshold = <10000>;
	status = "okay";
};

&dbgu {
	status = "okay";
};

&ebi {
	pinctrl-0 = <&pinctrl_ebi_addr_nand
		     &pinctrl_ebi_data_0_7>;
	pinctrl-names = "default";
	status = "okay";

	nand-controller {
		pinctrl-0 = <&pinctrl_nand_oe_we
			     &pinctrl_nand_cs
			     &pinctrl_nand_rb>;
		pinctrl-names = "default";
		status = "okay";

		nand@3 {
			reg = <0x3 0x0 0x800000>;
			rb-gpios = <&pioD 5 GPIO_ACTIVE_HIGH>;
			cs-gpios = <&pioD 4 GPIO_ACTIVE_HIGH>;
			nand-bus-width = <8>;
			nand-ecc-mode = "hw";
			nand-ecc-strength = <4>;
			nand-ecc-step-size = <512>;
			nand-on-flash-bbt;
			label = "atmel_nand";

Annotation

Implementation Notes