arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
File Facts
- System
- Linux kernel
- Corpus path
arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi- Extension
.dtsi- Size
- 19647 bytes
- Lines
- 905
- 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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
pm8994.dtsipmi8994.dtsidt-bindings/gpio/gpio.hdt-bindings/input/gpio-keys.hdt-bindings/pinctrl/qcom,pmic-gpio.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
// SPDX-License-Identifier: BSD-3-Clause
/*
* Common Board Device Tree for
* Microsoft Mobile MSM8994 Octagon Platforms
*
* Copyright (c) 2020, Konrad Dybcio
* Copyright (c) 2020, Gustave Monce <gustave.monce@outlook.com>
*/
#include "pm8994.dtsi"
#include "pmi8994.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/gpio-keys.h>
#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
/*
* Delete all generic (msm8994.dtsi) reserved
* memory mappings which are different in this device.
*/
/delete-node/ &adsp_mem;
/delete-node/ &audio_mem;
/delete-node/ &cont_splash_mem;
/delete-node/ &mba_mem;
/delete-node/ &mpss_mem;
/delete-node/ &peripheral_region;
/delete-node/ &res_hyp_mem;
/delete-node/ &rmtfs_mem;
/delete-node/ &smem_mem;
/ {
/*
* Most Lumia 950/XL users use GRUB to load their kernels,
* hence there is no need for msm-id and friends.
*/
/*
* This enables graphical output via bootloader-enabled display.
* acpi=no is required due to WP platforms having ACPI support, but
* only for Windows-based OSes.
*/
chosen {
bootargs = "earlycon=efifb console=efifb acpi=no";
#address-cells = <2>;
#size-cells = <2>;
ranges;
};
clocks {
divclk4: divclk4 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <32768>;
clock-output-names = "divclk4";
pinctrl-names = "default";
pinctrl-0 = <&divclk4_pin_a>;
};
};
gpio-keys {
compatible = "gpio-keys";
autorepeat;
volup-key {
label = "Volume Up";
gpios = <&pm8994_gpios 3 GPIO_ACTIVE_LOW>;
linux,input-type = <1>;
linux,code = <KEY_VOLUMEUP>;
Annotation
- Immediate include surface: `pm8994.dtsi`, `pmi8994.dtsi`, `dt-bindings/gpio/gpio.h`, `dt-bindings/input/gpio-keys.h`, `dt-bindings/pinctrl/qcom,pmic-gpio.h`.
- Atlas domain: Architecture Layer / arch/arm64.
- 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.