arch/arm64/boot/dts/freescale/imx91.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx91.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx91.dtsi
Extension
.dtsi
Size
2911 bytes
Lines
130
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 MIT)
/*
 * Copyright 2025 NXP
 */

#include "imx91-pinfunc.h"
#include "imx91_93_common.dtsi"

/{
	thermal-zones {
		cpu-thermal {
			polling-delay-passive = <250>;
			polling-delay = <2000>;
			thermal-sensors = <&tmu>;

			trips {
				cpu_alert: cpu-alert {
					temperature = <80000>;
					hysteresis = <2000>;
					type = "passive";
				};

				cpu_crit: cpu-crit {
					temperature = <90000>;
					hysteresis = <2000>;
					type = "critical";
				};
			};

			cooling-maps {
				map0 {
					trip = <&cpu_alert>;
					cooling-device =
						<&A55_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
				};
			};
		};
	};
};

&aips1 {
	tmu: thermal-sensor@44482000 {
		compatible = "fsl,imx91-tmu";
		reg = <0x44482000 0x1000>;
		#thermal-sensor-cells = <0>;
		clocks = <&clk IMX93_CLK_TMC_GATE>;
		interrupt-parent = <&gic>;
		interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
			     <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
			     <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-names = "thr1", "thr2", "ready";
		nvmem-cells = <&tmu_trim1>, <&tmu_trim2>;
		nvmem-cell-names = "trim1", "trim2";
	};
};

&clk {
	compatible = "fsl,imx91-ccm";
};

&ddr_pmu {
	compatible = "fsl,imx91-ddr-pmu", "fsl,imx93-ddr-pmu";
};

&eqos {
	clocks = <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>,
		 <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>,
		 <&clk IMX91_CLK_ENET_TIMER>,
		 <&clk IMX91_CLK_ENET1_QOS_TSN>,
		 <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>;

Annotation

Implementation Notes