arch/arm64/boot/dts/ti/k3-am68-phycore-som.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/ti/k3-am68-phycore-som.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/ti/k3-am68-phycore-som.dtsi
Extension
.dtsi
Size
9452 bytes
Lines
388
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) 2025 PHYTEC Messtechnik GmbH
 * Author: Dominik Haller <d.haller@phytec.de>
 *
 * https://www.phytec.eu/en/produkte/system-on-modules/phycore-am68x-tda4x/
 */

/dts-v1/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/net/ti-dp83867.h>
#include "k3-j721s2.dtsi"

/ {
	compatible = "phytec,am68-phycore-som", "ti,j721s2";
	model = "PHYTEC phyCORE-AM68x";

	aliases {
		ethernet1 = &main_cpsw_port1;
		mmc0 = &main_sdhci0;
		rtc0 = &i2c_som_rtc;
	};

	memory@80000000 {
		device_type = "memory";
		/* 4GB RAM */
		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
		      <0x00000008 0x80000000 0x00000000 0x80000000>;
		bootph-all;
	};

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

		/* global cma region */
		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			size = <0x00 0x20000000>;
			linux,cma-default;
		};

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

		mcu_r5fss0_core0_dma_memory_region: memory@a0000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0000000 0x00 0x100000>;
			no-map;
		};

		mcu_r5fss0_core0_memory_region: memory@a0100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0100000 0x00 0xf00000>;
			no-map;
		};
	};

	vdd_sd_dv: regulator-sd {
		/* Output of TLV71033 */
		compatible = "regulator-gpio";
		regulator-name = "VDD_SD_DV";
		pinctrl-names = "default";
		pinctrl-0 = <&vdd_sd_dv_pins_default>;

Annotation

Implementation Notes