arch/arm64/boot/dts/freescale/fsl-ls1028a-tqmls1028a.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/fsl-ls1028a-tqmls1028a.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/fsl-ls1028a-tqmls1028a.dtsi
Extension
.dtsi
Size
2534 bytes
Lines
125
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 MIT)
/*
 * Copyright 2019-2025 TQ-Systems GmbH <linux@ew.tq-group.com>,
 * D-82229 Seefeld, Germany.
 * Author: Michael Krummsdorf
 * Author: Matthias Schiffer
 * Author: Alexander Stein
 */

#include "fsl-ls1028a.dtsi"

/ {
	compatible = "tq,ls1028a-tqmls1028a", "fsl,ls1028a";

	reg_1p8v_som: regulator-1p8v-som {
		compatible = "regulator-fixed";
		regulator-name = "1P8V_SOM";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		regulator-always-on;
	};

	reg_3p3v_som: regulator-3p3v-som {
		compatible = "regulator-fixed";
		regulator-name = "3P3V_SOM";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
	};

	thermal-zones {
		/*
		 * TQMLS1028A uses an external temperature sensor
		 * instead of TMU
		 */
		/delete-node/ ddr-controller;

		cluster-thermal {
			thermal-sensors = <&sa56004_4c 1>;
		};
	};
};

&esdhc1 {
	no-sdio;
	no-sd;
	non-removable;
	mmc-hs200-1_8v;
	mmc-hs400-1_8v;
	mmc-ddr-1_8v;
	bus-width = <8>;
	vmmc-supply = <&reg_3p3v_som>;
	vqmmc-supply = <&reg_1p8v_som>;
	status = "okay";
};

&fspi {
	status = "okay";

	flash@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <100000000>;
		spi-tx-bus-width = <4>;
		spi-rx-bus-width = <4>;
		vcc-supply = <&reg_1p8v_som>;

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;

Annotation

Implementation Notes