arch/arm64/boot/dts/microchip/sparx5_pcb125.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/microchip/sparx5_pcb125.dts
Extension
.dts
Size
1506 bytes
Lines
80
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 (c) 2020 Microchip Technology Inc. and its subsidiaries.
 */

/dts-v1/;
#include "sparx5_pcb_common.dtsi"

/ {
	model = "Sparx5 PCB125 Reference Board";
	compatible = "microchip,sparx5-pcb125", "microchip,sparx5";

	memory@0 {
		device_type = "memory";
		reg = <0x00000000 0x00000000 0x10000000>;
	};
};

&gpio {
	emmc_pins: emmc-pins {
		/* NB: No "GPIO_35", "GPIO_36", "GPIO_37"
		 * (N/A: CARD_nDETECT, CARD_WP, CARD_LED)
		 */
		pins = "GPIO_34", "GPIO_38", "GPIO_39",
			"GPIO_40", "GPIO_41", "GPIO_42",
			"GPIO_43", "GPIO_44", "GPIO_45",
			"GPIO_46", "GPIO_47";
		drive-strength = <3>;
		function = "emmc";
	};
};

&sdhci0 {
	status = "okay";
	bus-width = <8>;
	non-removable;
	pinctrl-0 = <&emmc_pins>;
	max-frequency = <8000000>;
	microchip,clock-delay = <10>;
};

&spi0 {
	status = "okay";
	spi@0 {
		compatible = "spi-mux";
		mux-controls = <&mux>;
		#address-cells = <1>;
		#size-cells = <0>;
		reg = <0>;	/* CS0 */
		flash@9 {
			compatible = "jedec,spi-nor";
			spi-max-frequency = <8000000>;
			reg = <0x9>;	/* SPI */
		};
	};
	spi@1 {
		compatible = "spi-mux";
		mux-controls = <&mux 0>;
		#address-cells = <1>;
		#size-cells = <0>;
		reg = <1>; /* CS1 */
		flash@9 {
			compatible = "spi-nand";
			pinctrl-0 = <&cs1_pins>;
			pinctrl-names = "default";
			spi-max-frequency = <8000000>;
			reg = <0x9>;	/* SPI */
		};
	};
};

Annotation

Implementation Notes