Documentation/ABI/testing/sysfs-platform-oxp
Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-platform-oxp
File Facts
- System
- Linux kernel
- Corpus path
Documentation/ABI/testing/sysfs-platform-oxp- Extension
[no extension]- Size
- 1167 bytes
- Lines
- 26
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: Documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
What: /sys/devices/platform/<platform>/tt_toggle
Date: Jun 2023
KernelVersion: 6.5
Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
Description:
Takeover TDP controls from the device. OneXPlayer devices have a
turbo button that can be used to switch between two TDP modes
(usually 15W and 25W). By setting this attribute to 1, this
functionality is disabled, handing TDP control over to (Windows)
userspace software and the Turbo button turns into a keyboard
shortcut over the AT keyboard of the device. In addition,
using this setting is a prerequisite for PWM control for most
newer models (otherwise it NOOPs).
What: /sys/devices/platform/<platform>/tt_led
Date: April 2025
KernelVersion: 6.16
Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
Description:
Some OneXPlayer devices (e.g., X1 series) feature a little LED
nested in the Turbo button. This LED is illuminated when the
device is in the higher TDP mode (e.g., 25W). Once tt_toggle
is engaged, this LED is left dangling to its last state. This
attribute allows userspace to control the LED state manually
(either with 1 or 0). Only a subset of devices contain this LED.Annotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- 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.