arch/arm64/boot/dts/apple/t8112-j493.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/apple/t8112-j493.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/apple/t8112-j493.dts
Extension
.dts
Size
2953 bytes
Lines
149
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
/*
 * Apple MacBook Pro (13-inch, M1, 2022)
 *
 * target-type: J493
 *
 * Copyright The Asahi Linux Contributors
 */

/dts-v1/;

#include "t8112.dtsi"
#include "t8112-jxxx.dtsi"
#include <dt-bindings/leds/common.h>

/ {
	compatible = "apple,j493", "apple,t8112", "apple,arm-platform";
	model = "Apple MacBook Pro (13-inch, M2, 2022)";
	chassis-type = "laptop";

	/*
	 * All of those are used by the bootloader to pass calibration
	 * blobs and other device-specific properties
	 */
	aliases {
		bluetooth0 = &bluetooth0;
		touchbar0 = &touchbar0;
		wifi0 = &wifi0;
	};

	led-controller {
		compatible = "pwm-leds";
		led-0 {
			pwms = <&fpwm1 0 40000>;
			label = "kbd_backlight";
			function = LED_FUNCTION_KBD_BACKLIGHT;
			color = <LED_COLOR_ID_WHITE>;
			max-brightness = <255>;
			default-state = "keep";
		};
	};
};

/*
 * The driver depends on boot loader initialized state which resets when this
 * power-domain is powered off. This happens on suspend or when the driver is
 * missing during boot. Mark the domain as always on until the driver can
 * handle this.
 */
&ps_dispdfr_be {
	apple,always-on;
};

&display_dfr {
	status = "okay";
};

&dfr_mipi_out {
	dfr_mipi_out_panel: endpoint@0 {
		reg = <0>;
		remote-endpoint = <&dfr_panel_in>;
	};
};

&displaydfr_mipi {
	status = "okay";
	#address-cells = <1>;
	#size-cells = <0>;

	dfr_panel: panel@0 {

Annotation

Implementation Notes