arch/arm/boot/dts/nxp/imx/imx27-apf27dev.dts
Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/nxp/imx/imx27-apf27dev.dts
File Facts
- System
- Linux kernel
- Corpus path
arch/arm/boot/dts/nxp/imx/imx27-apf27dev.dts- Extension
.dts- Size
- 5149 bytes
- Lines
- 248
- 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
imx27-apf27.dts
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2013 Armadeus Systems - <support@armadeus.com>
*/
/* APF27Dev is a docking board for the APF27 SOM */
#include "imx27-apf27.dts"
/ {
model = "Armadeus Systems APF27Dev docking/development board";
compatible = "armadeus,imx27-apf27dev", "armadeus,imx27-apf27", "fsl,imx27";
display: display {
model = "Chimei-LW700AT9003";
bits-per-pixel = <16>; /* non-standard but required */
fsl,pcr = <0xfae80083>; /* non-standard but required */
display-timings {
native-mode = <&timing0>;
timing0: timing0 {
clock-frequency = <33000033>;
hactive = <800>;
vactive = <480>;
hback-porch = <96>;
hfront-porch = <96>;
vback-porch = <20>;
vfront-porch = <21>;
hsync-len = <64>;
vsync-len = <4>;
};
};
};
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpio_keys>;
user-key {
label = "user";
gpios = <&gpio6 13 GPIO_ACTIVE_HIGH>;
linux,code = <276>; /* BTN_EXTRA */
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpio_leds>;
led-user {
label = "Heartbeat";
gpios = <&gpio6 14 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
};
reg_max5821: regulator-0 {
compatible = "regulator-fixed";
regulator-name = "max5821-reg";
regulator-min-microvolt = <2500000>;
regulator-max-microvolt = <2500000>;
regulator-always-on;
};
};
&cspi1 {
cs-gpios = <&gpio4 28 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_cspi1 &pinctrl_cspi1_cs>;
status = "okay";
Annotation
- Immediate include surface: `imx27-apf27.dts`.
- 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.