arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
Extension
.dts
Size
11863 bytes
Lines
436
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 2026 NXP
 */

/dts-v1/;

#include <dt-bindings/usb/pd.h>
#include "imx91.dtsi"

/ {
	compatible = "fsl,imx91-9x9-qsb", "fsl,imx91";
	model = "NXP i.MX91 9x9 Quick Start Board";

	aliases {
		ethernet0 = &fec;
		ethernet1 = &eqos;
		gpio0 = &gpio1;
		gpio1 = &gpio2;
		gpio2 = &gpio3;
		i2c0 = &lpi2c1;
		i2c1 = &lpi2c2;
		mmc0 = &usdhc1;
		mmc1 = &usdhc2;
		rtc0 = &bbnsm_rtc;
		serial0 = &lpuart1;
	};

	chosen {
		stdout-path = &lpuart1;
	};

	reg_vref_1v8: regulator-adc-vref {
		compatible = "regulator-fixed";
		regulator-name = "vref_1v8";
		regulator-max-microvolt = <1800000>;
		regulator-min-microvolt = <1800000>;
	};

	reg_usdhc2_vmmc: regulator-usdhc2 {
		compatible = "regulator-fixed";
		regulator-name = "VSD_3V3";
		off-on-delay-us = <12000>;
		pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
		pinctrl-names = "default";
		regulator-max-microvolt = <3300000>;
		regulator-min-microvolt = <3300000>;
		gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

	reserved-memory {
		ranges;
		#address-cells = <2>;
		#size-cells = <2>;

		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			size = <0 0x10000000>;
			linux,cma-default;
		};
	};
};

&adc1 {
	vref-supply = <&reg_vref_1v8>;
	status = "okay";
};

Annotation

Implementation Notes