arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts
Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts
File Facts
- System
- Linux kernel
- Corpus path
arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts- Extension
.dts- Size
- 4810 bytes
- Lines
- 273
- 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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
bcm2711.dtsibcm2711-rpi.dtsibcm283x-rpi-led-deprecated.dtsibcm283x-rpi-usb-peripheral.dtsibcm283x-rpi-wifi-bt.dtsidt-bindings/leds/common.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "bcm2711.dtsi"
#include "bcm2711-rpi.dtsi"
#include "bcm283x-rpi-led-deprecated.dtsi"
#include "bcm283x-rpi-usb-peripheral.dtsi"
#include "bcm283x-rpi-wifi-bt.dtsi"
#include <dt-bindings/leds/common.h>
/ {
compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
model = "Raspberry Pi 4 Model B";
chosen {
/* 8250 auxiliary UART instead of pl011 */
stdout-path = "serial1:115200n8";
};
cam1_reg: regulator-cam1 {
compatible = "regulator-fixed";
regulator-name = "cam1-reg";
enable-active-high;
gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
};
sd_io_1v8_reg: regulator-sd-io-1v8 {
compatible = "regulator-gpio";
regulator-name = "vdd-sd-io";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
regulator-settling-time-us = <5000>;
gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
states = <1800000 0x1>,
<3300000 0x0>;
status = "okay";
};
sd_vcc_reg: regulator-sd-vcc {
compatible = "regulator-fixed";
regulator-name = "vcc-sd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
enable-active-high;
gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
};
};
&bt {
shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
};
&ddc0 {
status = "okay";
};
&ddc1 {
status = "okay";
};
&expgpio {
gpio-line-names = "BT_ON", /* 0 */
"WL_ON",
"PWR_LED_OFF",
"GLOBAL_RESET",
"VDD_SD_IO_SEL",
"CAM_GPIO", /* 5 */
"SD_PWR_ON",
Annotation
- Immediate include surface: `bcm2711.dtsi`, `bcm2711-rpi.dtsi`, `bcm283x-rpi-led-deprecated.dtsi`, `bcm283x-rpi-usb-peripheral.dtsi`, `bcm283x-rpi-wifi-bt.dtsi`, `dt-bindings/leds/common.h`.
- Atlas domain: Architecture Layer / arch/arm.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.