arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
Extension
.dtsi
Size
9370 bytes
Lines
386
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) 2019-2024 Texas Instruments Incorporated - https://www.ti.com/
 *
 * Product Link: https://www.ti.com/tool/J721EXSOMXEVM
 */

/dts-v1/;

#include "k3-j721e.dtsi"

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

	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;
		};
	};
};

&wkup_pmx0 {
	wkup_i2c0_pins_default: wkup-i2c0-default-pins {
		pinctrl-single,pins = <
			J721E_WKUP_IOPAD(0xf8, PIN_INPUT_PULLUP, 0) /* (J25) WKUP_I2C0_SCL */
			J721E_WKUP_IOPAD(0xfc, PIN_INPUT_PULLUP, 0) /* (H24) WKUP_I2C0_SDA */
		>;
		bootph-all;
	};

	pmic_irq_pins_default: pmic-irq-default-pins {
		pinctrl-single,pins = <
			J721E_WKUP_IOPAD(0x0d4, PIN_INPUT, 7) /* (G26) WKUP_GPIO0_9 */
		>;
	};

	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-default-pins {
		pinctrl-single,pins = <
			J721E_WKUP_IOPAD(0x0000, PIN_OUTPUT, 0) /* MCU_OSPI0_CLK */
			J721E_WKUP_IOPAD(0x0008, PIN_INPUT, 0)  /* MCU_OSPI0_DQS */
			J721E_WKUP_IOPAD(0x000c, PIN_INPUT, 0)  /* MCU_OSPI0_D0 */
			J721E_WKUP_IOPAD(0x0010, PIN_INPUT, 0)  /* MCU_OSPI0_D1 */
			J721E_WKUP_IOPAD(0x0014, PIN_INPUT, 0)  /* MCU_OSPI0_D2 */
			J721E_WKUP_IOPAD(0x0018, PIN_INPUT, 0)  /* MCU_OSPI0_D3 */
			J721E_WKUP_IOPAD(0x001c, PIN_INPUT, 0)  /* MCU_OSPI0_D4 */
			J721E_WKUP_IOPAD(0x0020, PIN_INPUT, 0)  /* MCU_OSPI0_D5 */

Annotation

Implementation Notes