Linus Torvalds e65f4718a5 Merge tag 'soc-dt-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC devicetree updates from Arnd Bergmann:
 "A number of SoC platforms are adding modernized variants of their
  already supported chips time, with a total of 12 new SoCs, and two
  older SoC getting removed:

   - Qualcomm Glymur is a compute SoC using 18 Oryon-2 CPU cores
   - Qualcomm Mahua is a variant of Glymur with only 12 CPU cores, but
     largely identical.
   - Qualcomm Eliza is an embeded platform for mobile phone (SM7750) and
     IOT (QC7790S/M) workloads
   - Qualcomm IPQ5210 is a wireless networking SoC using Cortex-A53
     cores
   - Qualcomm apq8084 and ipq806x had only rudimentary support but no
     actual products using them, so they are now gone.
   - Axis ARTPEC-9 is a follow-up to the ARTPEC-8 embedded SoC, using
     the Samsung SoC platform but now with Cortex-A55 cores
   - ARM Zena is a virtual platform in FVP using Cortex-A720AE cores,
     with additional versions planned to be merged in the future.
   - ARM corstone-1000-a320 is a reference platform for IOT, using
     low-end Cortex-A320 cores
   - Microchip LAN9691 is an updated 64-bit variant of the arm32 lan966x
     series of networking SoCs
   - Microchip PIC64GX is an embedded RISC-V chip using SIFIVE U54 CPU
     cores
   - Rockchip RV1103B is the low-end 32-bit single-core vision processor
   - Renesas RZ/G3L (r9a08g046) is an industrial embedded chip using
     Cortex-A55 cores, similar to the G3E and G3S variants we already
     supported.
   - NXP S32N79 is an automotive SoC using Cortex-A78AE cores, a
     significant upgrade from the older S32V and S32G series

  These all come with at least one reference board or an initial product
  using these, in total there are 67 newly added boards. The ones for
  already supported SoCs are:

   - Two more Aspeed BMC based boards
   - Three older tablets based on 32-bit OMAP4 and Exynos5 SoCs
   - One Set-top-box based on Allwinner H6
   - 22 additional industrial/embedded boards using 64-bit NXP i.MX8M or
     i.MX9 SoCs
   - 20 Qualcomm SoC based machines across all possible markets:
     workstation, gaming, laptop, phone, networking, reference, ...
   - Three more Rockchips rk35xx based boards
   - Four variants of the Toradex Verdin using TI AM62

  Other notable bits are:

   - A cleanup for the 32-bit Tegra paz00 board moved the last board
     specific code on Tegra into equivalent dts syntax.
   - There continues to be a significant number of fixes for static
     checking of dtc syntax, but it feels like this is slowing down,
     hopefully getting into a state where most known issues are
     addressed
   - Additional hardware support for many existing boards across SoC
     families, notably Qualcomm, Broadcom, i.MX2, i.MX6, Rockchips,
     STM32, Mediatek, Tegra, TI and Microchip"

* tag 'soc-dt-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (841 commits)
  arm64: dts: ti: k3: Use memory-region-names for r5f
  ARM: dts: imx: Add DT overlays for DH i.MX6 DHCOM SoM and boards
  ARM: dts: imx6sx: remove fallback compatible string fsl,imx28-lcdif
  ARM: dts: imx25: rename node name tcq to touchscreen
  ARM: dts: imx: b850v3: Disable unused usdhc4
  ARM: dts: imx: b850v3: Define GPIO line names
  ARM: dts: imx: b850v3: Use alphabetical sorting
  ARM: dts: imx: bx50v3: Configure phy-mode to eliminate a warning
  ARM: dts: imx: bx50v3: Configure switch PHY max-speed to 100Mbps
  ARM: dts: imx7ulp: Add CPU clock and OPP table support
  ARM: dts: imx7-mba7: Deassert BOOT_EN after boot
  ARM: dts: tqma7: add boot phase properties
  ARM: dts: imx7s: add boot phase properties
  ARM: dts: tqma6ul[l]: correct spelling of TQ-Systems
  ARM: dts: mba6ulx: add boot phase properties
  ARM: dts: imx6ul[l]-tqma6ul[l]: add boot phase properties
  ARM: dts: imx6ul/imx6ull: add boot phase properties
  ARM: dts: imx6qdl-mba6: add boot phase properties
  ARM: dts: imx6qdl-tqma6: add boot phase properties
  ARM: dts: imx6qdl: add boot phase properties
  ...
2026-04-16 20:28:48 -07:00
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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