arch/arm/boot/dts/renesas/r8a7794-alt.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/renesas/r8a7794-alt.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/renesas/r8a7794-alt.dts
Extension
.dts
Size
9478 bytes
Lines
528
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 Source for the Alt board
 *
 * Copyright (C) 2014 Renesas Electronics Corporation
 */

/dts-v1/;
#include "r8a7794.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

/ {
	model = "Alt";
	compatible = "renesas,alt", "renesas,r8a7794";

	aliases {
		serial0 = &scif2;
		i2c9 = &gpioi2c1;
		i2c10 = &gpioi2c4;
		i2c11 = &i2chdmi;
		i2c12 = &i2cexio4;
		mmc0 = &mmcif0;
		mmc1 = &sdhi0;
		mmc2 = &sdhi1;
	};

	chosen {
		bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
		stdout-path = "serial0:115200n8";
	};

	memory@40000000 {
		device_type = "memory";
		reg = <0 0x40000000 0 0x40000000>;
	};

	d3_3v: regulator-d3-3v {
		compatible = "regulator-fixed";
		regulator-name = "D3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
	};

	vcc_sdhi0: regulator-vcc-sdhi0 {
		compatible = "regulator-fixed";

		regulator-name = "SDHI0 Vcc";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;

		gpio = <&gpio2 26 GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

	vccq_sdhi0: regulator-vccq-sdhi0 {
		compatible = "regulator-gpio";

		regulator-name = "SDHI0 VccQ";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;

		gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
		gpios-states = <1>;
		states = <3300000 1>, <1800000 0>;
	};

	vcc_sdhi1: regulator-vcc-sdhi1 {

Annotation

Implementation Notes