arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
Extension
.dtsi
Size
3235 bytes
Lines
192
Domain
Architecture Layer
Bucket
arch/arm64
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 OR MIT
/*
 * Copyright 2022 Toradex
 */

/ {
	sound_card: sound-card {
		compatible = "simple-audio-card";
		simple-audio-card,bitclock-master = <&dailink_master>;
		simple-audio-card,format = "i2s";
		simple-audio-card,frame-master = <&dailink_master>;
		simple-audio-card,mclk-fs = <256>;
		simple-audio-card,name = "verdin-wm8904";
		simple-audio-card,routing =
			"Headphone Jack", "HPOUTL",
			"Headphone Jack", "HPOUTR",
			"IN2L", "Line In Jack",
			"IN2R", "Line In Jack",
			"Microphone Jack", "MICBIAS",
			"IN1L", "Microphone Jack";
		simple-audio-card,widgets =
			"Microphone", "Microphone Jack",
			"Headphone", "Headphone Jack",
			"Line", "Line In Jack";

		dailink_master: simple-audio-card,codec {
			clocks = <&clk IMX8MM_CLK_SAI2_ROOT>;
			sound-dai = <&wm8904_1a>;
		};

		simple-audio-card,cpu {
			sound-dai = <&sai2>;
		};
	};

	reg_usb_hub: regulator-usb-hub {
		compatible = "regulator-fixed";
		enable-active-high;
		/* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */
		gpio = <&gpio5 1 GPIO_ACTIVE_HIGH>;
		regulator-boot-on;
		regulator-name = "HUB_PWR_EN";
	};

	reg_pcie: regulator-pcie {
		compatible = "regulator-fixed";
		enable-active-high;
		/* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */
		gpio = <&gpio5 1 GPIO_ACTIVE_HIGH>;
		regulator-boot-on;
		regulator-name = "PCIE_1_PWR_EN";
		startup-delay-us = <100000>;
	};
};

/* Verdin SPI_1 */
&ecspi2 {
	status = "okay";
};

/* EEPROM on display adapter boards */
&eeprom_display_adapter {
	status = "okay";
};

/* EEPROM on Verdin Development board */
&eeprom_carrier_board {
	status = "okay";
};

Annotation

Implementation Notes