Linus Torvalds 9b725d5959 Merge tag 'phy-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
 "Core:

   - Add suuport for "rx-polarity" and "tx-polarity" device tree
     properties and phy common properties to manage this

  New Support:

   - Qualcomm Glymur PCIe Gen4 2-lanes PCIe phy, DP and edp phy, USB UNI
     PHY and SMB2370 eUSB2 repeater. SC8280xp QMP UFS PHY, Kaanapali
     PCIe phy and QMP PHY, QCS615 QMP USB3+DP PHY and driver support for
     that.

   - SpacemiT PCIe/combo PHY and K1 USB2 PHY driver.

   - HDMI 2.1 FRL configuration support and driver enabling for rockchip
     samsung-hdptx driver

   - TI TCAN1046 phy

   - Renesas RZ/V2H(P) and RZ/V2N usb3

   - Mediatek MT8188 hdmi-phy

   - Google Tensor SoC USB PHY driver

   - Apple Type-C PHY

  Updates:

   - Subsystem conversion for clock round_rate() to determine_rate()

   - TI USB3 DT schema conversion

   - Samsung ExynosAutov920 usb3, combo hsphy and ssphy support"

* tag 'phy-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (143 commits)
  phy: ti: phy-j721e-wiz: convert from divider_round_rate() to divider_determine_rate()
  dt-bindings: phy: ti,control-phy-otghs: convert to DT schema
  dt-bindings: phy: ti,phy-usb3: convert to DT schema
  phy: tegra: xusb: Remove unused powered_on variable
  phy: renesas: rcar-gen3-usb2: add regulator dependency
  phy: GOOGLE_USB: add TYPEC dependency
  phy: enter drivers/phy/Makefile even without CONFIG_GENERIC_PHY
  phy: renesas: rcar-gen3-usb2: Use mux-state for phyrst management
  phy: renesas: rcar-gen3-usb2: Add regulator for OTG VBUS control
  phy: renesas: rcar-gen3-usb2: Use devm_pm_runtime_enable()
  phy: renesas: rcar-gen3-usb2: Factor out VBUS control logic
  dt-bindings: phy: renesas,usb2-phy: Document RZ/G3E SoC
  dt-bindings: phy: renesas,usb2-phy: Document mux-states property
  dt-bindings: phy: renesas,usb2-phy: Document USB VBUS regulator
  phy: rockchip: samsung-hdptx: Add HDMI 2.1 FRL support
  phy: rockchip: samsung-hdptx: Extend rk_hdptx_phy_verify_hdmi_config() helper
  phy: rockchip: samsung-hdptx: Switch to driver specific HDMI config
  phy: rockchip: samsung-hdptx: Drop hw_rate driver data
  phy: rockchip: samsung-hdptx: Compute clk rate from PLL config
  phy: rockchip: samsung-hdptx: Cleanup *_cmn_init_seq lists
  ...
2026-02-17 11:40:04 -08:00
2026-01-26 19:07:09 -08:00
2022-09-28 09:02:20 +02:00
2025-02-19 14:53:27 -07:00

Linux kernel
============

The Linux kernel is the core of any Linux operating system. It manages hardware,
system resources, and provides the fundamental services for all other software.

Quick Start
-----------

* Report a bug: See Documentation/admin-guide/reporting-issues.rst
* Get the latest kernel: https://kernel.org
* Build the kernel: See Documentation/admin-guide/quickly-build-trimmed-linux.rst
* Join the community: https://lore.kernel.org/

Essential Documentation
-----------------------

All users should be familiar with:

* Building requirements: Documentation/process/changes.rst
* Code of Conduct: Documentation/process/code-of-conduct.rst
* License: See COPYING

Documentation can be built with make htmldocs or viewed online at:
https://www.kernel.org/doc/html/latest/


Who Are You?
============

Find your role below:

* New Kernel Developer - Getting started with kernel development
* Academic Researcher - Studying kernel internals and architecture
* Security Expert - Hardening and vulnerability analysis
* Backport/Maintenance Engineer - Maintaining stable kernels
* System Administrator - Configuring and troubleshooting
* Maintainer - Leading subsystems and reviewing patches
* Hardware Vendor - Writing drivers for new hardware
* Distribution Maintainer - Packaging kernels for distros
* AI Coding Assistant - LLMs and AI-powered development tools


For Specific Users
==================

New Kernel Developer
--------------------

Welcome! Start your kernel development journey here:

* Getting Started: Documentation/process/development-process.rst
* Your First Patch: Documentation/process/submitting-patches.rst
* Coding Style: Documentation/process/coding-style.rst
* Build System: Documentation/kbuild/index.rst
* Development Tools: Documentation/dev-tools/index.rst
* Kernel Hacking Guide: Documentation/kernel-hacking/hacking.rst
* Core APIs: Documentation/core-api/index.rst

Academic Researcher
-------------------

Explore the kernel's architecture and internals:

* Researcher Guidelines: Documentation/process/researcher-guidelines.rst
* Memory Management: Documentation/mm/index.rst
* Scheduler: Documentation/scheduler/index.rst
* Networking Stack: Documentation/networking/index.rst
* Filesystems: Documentation/filesystems/index.rst
* RCU (Read-Copy Update): Documentation/RCU/index.rst
* Locking Primitives: Documentation/locking/index.rst
* Power Management: Documentation/power/index.rst

Security Expert
---------------

Security documentation and hardening guides:

* Security Documentation: Documentation/security/index.rst
* LSM Development: Documentation/security/lsm-development.rst
* Self Protection: Documentation/security/self-protection.rst
* Reporting Vulnerabilities: Documentation/process/security-bugs.rst
* CVE Procedures: Documentation/process/cve.rst
* Embargoed Hardware Issues: Documentation/process/embargoed-hardware-issues.rst
* Security Features: Documentation/userspace-api/seccomp_filter.rst

Backport/Maintenance Engineer
-----------------------------

Maintain and stabilize kernel versions:

* Stable Kernel Rules: Documentation/process/stable-kernel-rules.rst
* Backporting Guide: Documentation/process/backporting.rst
* Applying Patches: Documentation/process/applying-patches.rst
* Subsystem Profile: Documentation/maintainer/maintainer-entry-profile.rst
* Git for Maintainers: Documentation/maintainer/configure-git.rst

System Administrator
--------------------

Configure, tune, and troubleshoot Linux systems:

* Admin Guide: Documentation/admin-guide/index.rst
* Kernel Parameters: Documentation/admin-guide/kernel-parameters.rst
* Sysctl Tuning: Documentation/admin-guide/sysctl/index.rst
* Tracing/Debugging: Documentation/trace/index.rst
* Performance Security: Documentation/admin-guide/perf-security.rst
* Hardware Monitoring: Documentation/hwmon/index.rst

Maintainer
----------

Lead kernel subsystems and manage contributions:

* Maintainer Handbook: Documentation/maintainer/index.rst
* Pull Requests: Documentation/maintainer/pull-requests.rst
* Managing Patches: Documentation/maintainer/modifying-patches.rst
* Rebasing and Merging: Documentation/maintainer/rebasing-and-merging.rst
* Development Process: Documentation/process/maintainer-handbooks.rst
* Maintainer Entry Profile: Documentation/maintainer/maintainer-entry-profile.rst
* Git Configuration: Documentation/maintainer/configure-git.rst

Hardware Vendor
---------------

Write drivers and support new hardware:

* Driver API Guide: Documentation/driver-api/index.rst
* Driver Model: Documentation/driver-api/driver-model/driver.rst
* Device Drivers: Documentation/driver-api/infrastructure.rst
* Bus Types: Documentation/driver-api/driver-model/bus.rst
* Device Tree Bindings: Documentation/devicetree/bindings/
* Power Management: Documentation/driver-api/pm/index.rst
* DMA API: Documentation/core-api/dma-api.rst

Distribution Maintainer
-----------------------

Package and distribute the kernel:

* Stable Kernel Rules: Documentation/process/stable-kernel-rules.rst
* ABI Documentation: Documentation/ABI/README
* Kernel Configuration: Documentation/kbuild/kconfig.rst
* Module Signing: Documentation/admin-guide/module-signing.rst
* Kernel Parameters: Documentation/admin-guide/kernel-parameters.rst
* Tainted Kernels: Documentation/admin-guide/tainted-kernels.rst

AI Coding Assistant
-------------------

CRITICAL: If you are an LLM or AI-powered coding assistant, you MUST read and
follow the AI coding assistants documentation before contributing to the Linux
kernel:

* Documentation/process/coding-assistants.rst

This documentation contains essential requirements about licensing, attribution,
and the Developer Certificate of Origin that all AI tools must comply with.


Communication and Support
=========================

* Mailing Lists: https://lore.kernel.org/
* IRC: #kernelnewbies on irc.oftc.net
* Bugzilla: https://bugzilla.kernel.org/
* MAINTAINERS file: Lists subsystem maintainers and mailing lists
* Email Clients: Documentation/process/email-clients.rst
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