arch/arm64/boot/dts/freescale/imx8mm-ucm-som.dtsi

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

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx8mm-ucm-som.dtsi
Extension
.dtsi
Size
16467 bytes
Lines
680
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 MIT)
//
// Copyright 2018 CompuLab

/dts-v1/;

#include "imx8mm.dtsi"
#include <dt-bindings/leds/common.h>

/ {
	aliases {
		rtc0 = &rtc_i2c;
		rtc1 = &snvs_rtc;
		mmc0 = &usdhc3;
	};

	chosen {
		stdout-path = &uart3;
	};

	backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm2 0 3000000 0>;
		brightness-levels = <0 255>;
		num-interpolated-steps = <255>;
		default-brightness-level = <222>;
		status = "okay";
	};

	leds {
		compatible = "gpio-leds";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_gpio_led>;

		heartbeat-led {
			function = LED_FUNCTION_STATUS;
			gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
			linux,default-trigger = "heartbeat";
		};
	};

	pmic_osc: clock-pmic {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <32768>;
		clock-output-names = "pmic_osc";
	};

	wlreg_on: regulator-wlreg-on {
		compatible = "regulator-fixed";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-name = "wlreg_on";
		gpio = <&gpio2 10 GPIO_ACTIVE_HIGH>;
		startup-delay-us = <100>;
		enable-active-high;
		regulator-always-on;
		status = "okay";
	};

	reg_usdhc2_vmmc: regulator-usdhc2-vmmc {
		compatible = "regulator-fixed";
		regulator-name = "VSD_3V3";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
		enable-active-high;
		startup-delay-us = <100>;
		off-on-delay-us = <12000>;
	};

Annotation

Implementation Notes