arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
Extension
.dtsi
Size
10624 bytes
Lines
458
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
/*
 * SoM: https://www.ti.com/lit/zip/sprr439
 *
 * Copyright (C) 2021-2024 Texas Instruments Incorporated - https://www.ti.com/
 */

/dts-v1/;

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

/ {
	memory@80000000 {
		device_type = "memory";
		bootph-all;
		/* 16 GB RAM */
		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
		      <0x00000008 0x80000000 0x00000003 0x80000000>;
	};

	/* Reserving memory regions still pending */
	reserved_memory: reserved-memory {
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

		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;
		};
	};

	mux0: mux-controller-0 {
		compatible = "gpio-mux";
		#mux-state-cells = <1>;
		mux-gpios = <&exp_som 1 GPIO_ACTIVE_HIGH>;
	};

	mux1: mux-controller-1 {
		compatible = "gpio-mux";
		#mux-state-cells = <1>;
		mux-gpios = <&exp_som 2 GPIO_ACTIVE_HIGH>;
	};

	transceiver0: can-phy0 {
		/* standby pin has been grounded by default */
		compatible = "ti,tcan1042";
		#phy-cells = <0>;
		max-bitrate = <5000000>;
	};

	vsys_io_1v8: regulator-vsys-io-1v8 {
		compatible = "regulator-fixed";
		regulator-name = "vsys_io_1v8";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;

Annotation

Implementation Notes