arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi
Extension
.dtsi
Size
19479 bytes
Lines
847
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
#include <dt-bindings/input/input.h>
#include <dt-bindings/thermal/thermal.h>
#include "tegra124.dtsi"

/ {
	aliases {
		rtc0 = "/i2c@7000d000/pmic@40";
		rtc1 = "/rtc@7000e000";
		serial0 = &uarta;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	firmware {
		#address-cells = <1>;
		#size-cells = <1>;
	};

	/*
	 * Note that recent version of the device tree compiler (starting with
	 * version 1.4.2) warn about this node containing a reg property, but
	 * missing a unit-address. However, the bootloader on these Chromebook
	 * devices relies on the full name of this node to be exactly /memory.
	 * Adding the unit-address causes the bootloader to create a /memory
	 * node and write the memory bank configuration to that node, which in
	 * turn leads the kernel to believe that the device has 2 GiB of
	 * memory instead of the amount detected by the bootloader.
	 *
	 * The name of this node is effectively ABI and must not be changed.
	 */
	memory {
		device_type = "memory";
		reg = <0x0 0x80000000 0x0 0x80000000>;
	};

	/delete-node/ memory@80000000;

	host1x@50000000 {
		hdmi@54280000 {
			status = "okay";

			vdd-supply = <&vdd_3v3_hdmi>;
			pll-supply = <&vdd_hdmi_pll>;
			hdmi-supply = <&vdd_5v0_hdmi>;

			nvidia,ddc-i2c-bus = <&hdmi_ddc>;
			nvidia,hpd-gpio =
				<&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
		};

		sor@54540000 {
			status = "okay";

			avdd-io-hdmi-dp-supply = <&vdd_3v3_hdmi>;
			vdd-hdmi-dp-pll-supply = <&vdd_hdmi_pll>;

			nvidia,dpaux = <&dpaux>;
			nvidia,panel = <&panel>;
		};

		dpaux@545c0000 {
			vdd-supply = <&vdd_3v3_panel>;
			status = "okay";
		};
	};

	gpu@57000000 {

Annotation

Implementation Notes