arch/arm64/boot/dts/st/stm32mp251.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/st/stm32mp251.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/st/stm32mp251.dtsi
Extension
.dtsi
Size
60692 bytes
Lines
2223
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 BSD-3-Clause)
/*
 * Copyright (C) STMicroelectronics 2023 - All Rights Reserved
 * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
 */
#include <dt-bindings/clock/st,stm32mp25-rcc.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/reset/st,stm32mp25-rcc.h>
#include <dt-bindings/regulator/st,stm32mp25-regulator.h>
#include <dt-bindings/phy/phy.h>

/ {
	#address-cells = <2>;
	#size-cells = <2>;

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu0: cpu@0 {
			compatible = "arm,cortex-a35";
			device_type = "cpu";
			reg = <0>;
			enable-method = "psci";
			power-domains = <&CPU_PD0>;
			power-domain-names = "psci";
		};
	};

	arm-pmu {
		compatible = "arm,cortex-a35-pmu";
		interrupts = <GIC_SPI 368 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-affinity = <&cpu0>;
		interrupt-parent = <&intc>;
	};

	arm_wdt: watchdog {
		compatible = "arm,smc-wdt";
		arm,smc-id = <0xb200005a>;
		status = "disabled";
	};

	clocks {
		clk_dsi_txbyte: txbyteclk {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <0>;
		};

		clk_rcbsec: clk-rcbsec {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <64000000>;
		};

		clk_flexgen_27_fixed: clk-54000000 {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <54000000>;
		};
	};

	firmware {
		optee: optee {
			compatible = "linaro,optee-tz";
			method = "smc";
			interrupt-parent = <&intc>;
			interrupts = <GIC_PPI 15 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>;
		};

Annotation

Implementation Notes