arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
Extension
.dtsi
Size
9280 bytes
Lines
358
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 2020-2021 TQ-Systems GmbH
 */

#include <dt-bindings/phy/phy-imx8-pcie.h>
#include "imx8mm.dtsi"

/ {
	model = "TQ-Systems GmbH i.MX8MM TQMa8MxML";
	compatible = "tq,imx8mm-tqma8mqml", "fsl,imx8mm";

	memory@40000000 {
		device_type = "memory";
		/*  our minimum RAM config will be 1024 MiB */
		reg = <0x00000000 0x40000000 0 0x40000000>;
	};

	reg_usdhc2_vqmmc: regulator-usdhc2-vqmmc {
		compatible = "regulator-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_reg_usdhc2_vqmmc>;
		regulator-name = "V_SD2";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
		states = <1800000 0x1>,
			 <3300000 0x0>;
		vin-supply = <&ldo5_reg>;
		status = "disabled";
	};

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

		/* global autoconfigured region for contiguous allocations */
		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			/* 640 MiB */
			size = <0 0x28000000>;
			/*  1024 - 128 MiB, our minimum RAM config will be 1024 MiB */
			alloc-ranges = <0 0x40000000 0 0x78000000>;
			linux,cma-default;
		};
	};
};

&A53_0 {
	cpu-supply = <&buck2_reg>;
};

&flexspi {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_flexspi>;
	status = "okay";

	flash0: flash@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <84000000>;
		spi-tx-bus-width = <1>;
		spi-rx-bus-width = <4>;
		vcc-supply = <&buck5_reg>;

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;

Annotation

Implementation Notes