arch/arm/boot/dts/nxp/mxs/imx28-btt3.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/nxp/mxs/imx28-btt3.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/nxp/mxs/imx28-btt3.dtsi
Extension
.dtsi
Size
6794 bytes
Lines
314
Domain
Architecture Layer
Bucket
arch/arm
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 2024
 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
 */
/dts-v1/;
#include "imx28-lwe.dtsi"

/ {
	model = "BTT3";

	compatible = "lwn,imx28-btt3", "fsl,imx28";

	chosen {
	       bootargs = "root=/dev/mmcblk0p2 rootfstype=ext4 ro rootwait console=ttyAMA0,115200 panic=1 quiet";
	};

	memory@40000000 {
		reg = <0x40000000 0x10000000>;
		device_type = "memory";
	};

	panel {
		compatible = "powertip,hx8238a", "panel-dpi";
		power-supply = <&reg_3v3>;
		width-mm = <70>;
		height-mm = <52>;

		panel-timing {
			clock-frequency = <6500000>;
			hactive = <320>;
			vactive = <240>;
			hfront-porch = <20>;
			hback-porch = <38>;
			hsync-len = <30>;
			vfront-porch = <4>;
			vback-porch = <14>;
			vsync-len = <4>;
			hsync-active = <0>;
			vsync-active = <0>;
			de-active = <0>;
			pixelclk-active = <1>;
		};

		port {
			panel_in: endpoint {
				remote-endpoint = <&display_out>;
			};
		};
	};

	poweroff {
		compatible = "gpio-poweroff";
		gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
	};

	sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "BTTC Audio";
		simple-audio-card,widgets = "Speaker", "BTTC Speaker";
		simple-audio-card,routing = "BTTC Speaker", "SPKOUTN", "BTTC Speaker", "SPKOUTP";

		simple-audio-card,dai-link@0 {
			format = "left_j";
			bitclock-master = <&dai0_master>;
			frame-master = <&dai0_master>;
			mclk-fs = <256>;

			dai0_master: cpu {
				sound-dai = <&saif0>;

Annotation

Implementation Notes