arch/arm/boot/dts/gemini/gemini-sq201.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/gemini/gemini-sq201.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/gemini/gemini-sq201.dts
Extension
.dts
Size
5964 bytes
Lines
287
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 ITian Square One SQ201 NAS
 */

/dts-v1/;

#include "gemini.dtsi"
#include <dt-bindings/input/input.h>

/ {
	model = "ITian Square One SQ201";
	compatible = "itian,sq201", "cortina,gemini";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 { /* 128 MB */
		device_type = "memory";
		reg = <0x00000000 0x8000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8 root=/dev/mtdblock3 rw rootfstype=squashfs,jffs2 rootwait";
		stdout-path = &uart0;
	};

	gpio_keys {
		compatible = "gpio-keys";

		button-setup {
			debounce-interval = <100>;
			wakeup-source;
			linux,code = <KEY_RESTART>;
			label = "factory reset";
			/* Conflict with NAND flash */
			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
		};
	};

	leds {
		compatible = "gpio-leds";
		led-green-info {
			label = "sq201:green:info";
			gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
			default-state = "on";
			linux,default-trigger = "heartbeat";
		};
		led-green-usb {
			label = "sq201:green:usb";
			gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
			default-state = "off";
			linux,default-trigger = "usb-host";
		};
	};

	mdio0: mdio {
		compatible = "virtual,mdio-gpio";
		/* Uses MDC and MDIO */
		gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>, /* MDC */
			<&gpio0 21 GPIO_ACTIVE_HIGH>; /* MDIO */
		#address-cells = <1>;
		#size-cells = <0>;

		/* This is a Marvell 88E1111 ethernet transciever */
		phy0: ethernet-phy@1 {
			reg = <1>;
		};
	};

	spi {

Annotation

Implementation Notes