arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi
Extension
.dtsi
Size
3564 bytes
Lines
177
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-only OR MIT
/*
 * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/
 * Copyright (c) 2022-2024 TQ-Systems GmbH <linux@ew.tq-group.com>, D-82229 Seefeld, Germany.
 */

#include "k3-am642.dtsi"

/ {
	aliases {
		i2c0 = &main_i2c0;
		mmc0 = &sdhci0;
		spi0 = &ospi0;
	};

	memory@80000000 {
		device_type = "memory";
		/* 1G RAM - default variant */
		reg = <0x00000000 0x80000000 0x00000000 0x40000000>;
		bootph-pre-ram;
	};

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

		secure_ddr: optee@9e800000 {
			reg = <0x00 0x9e800000 0x00 0x01800000>;
			alignment = <0x1000>;
			no-map;
		};

		main_r5fss0_core0_dma_memory_region: memory@a0000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0000000 0x00 0x100000>;
			no-map;
		};

		main_r5fss0_core0_memory_region: memory@a0100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0100000 0x00 0xf00000>;
			no-map;
		};
	};

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

&fss {
	bootph-all;
};

&main_i2c0 {
	pinctrl-names = "default";
	pinctrl-0 = <&main_i2c0_pins>;
	clock-frequency = <400000>;
	bootph-pre-ram;
	status = "okay";

	tmp1075: temperature-sensor@4a {
		compatible = "ti,tmp1075";
		reg = <0x4a>;

Annotation

Implementation Notes