arch/arm64/boot/dts/freescale/tqma8xx.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/tqma8xx.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/tqma8xx.dtsi
Extension
.dtsi
Size
6772 bytes
Lines
278
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 X11)
/*
 * Copyright 2018-2023 TQ-Systems GmbH <linux@ew.tq-group.com>,
 * D-82229 Seefeld, Germany.
 * Author: Alexander Stein
 */

/ {
	memory@80000000 {
		device_type = "memory";
		reg = <0x00000000 0x80000000 0 0x40000000>;
	};

	reg_1v8: regulator-1v8 {
		compatible = "regulator-fixed";
		regulator-name = "V_1V8";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
	};

	reg_3v3: regulator-3v3 {
		compatible = "regulator-fixed";
		regulator-name = "V_3V3";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
	};

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

		/*
		 * global autoconfigured region for contiguous allocations
		 * must not exceed memory size and region
		 */
		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			size = <0 0x20000000>;
			alloc-ranges = <0 0x96000000 0 0x30000000>;
			linux,cma-default;
		};
	};
};

/* TQMa8Xx only uses industrial grade, reduce trip points accordingly */
&cpu_alert0 {
	temperature = <95000>;
};

&cpu_crit0 {
	temperature = <100000>;
};
/* end of temperature grade adjustments */

&flexspi0 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_flexspi0>;
	status = "okay";

	flash0: flash@0 {
		reg = <0>;
		compatible = "jedec,spi-nor";
		spi-max-frequency = <66000000>;
		spi-tx-bus-width = <1>;
		spi-rx-bus-width = <4>;
		vcc-supply = <&reg_1v8>;

		partitions {

Annotation

Implementation Notes