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Stephen Boyd 804b10deb0 clk: various improvements and fixes
Here's various improvements and fixes for the clk subsystem that was posted prior
 to the opening of the last merge window.
 
 - Add spread spectrum clock (SSC) support to the clk framework, including a new
   assigned-clock-sscs devicetree property and clk_hw_set_spread_spectrum()
   API with KUnit tests (Peng Fan)
 - Add SCMI clock OEM extensions for the i.MX95 clock driver and introduce a
   common SCMI clock header (Peng Fan)
 - Add clock, reset, and devicetree bindings for the ESWIN EIC7700 HSP clock and
   reset generator (Xuyang Dong)
 - Add clk_determine_rate_noop() helper for clock drivers that can do any rate,
   and convert existing open-coded implementations across hisilicon, imx, qcom,
   renesas, rp1, samsung, scpi, sprd, mediatek phy, and mediatek pmdomain
   drivers (Brian Masney)
 - Add kernel-doc documentation for struct clk_core and the core clock flags,
   and wire up clk identifiers into the documentation build (Brian Masney)
 - Fix clk_divider_bestdiv() returning the minimum rate instead of the maximum
   rate for large rate requests, with KUnit tests (Lad Prabhakar)
 - Fix Nuvoton MA35D1 PLL frequency calculation including ignored div_u64
   return values, incorrect PLL_CTL1_FRAC bit field width, and broken
   determine_rate logic (Joey Lu)
 - Support unique clock names for multi-socket Tegra platforms (Jon Hunter)
 - Allow COMPILE_TEST builds for HiSilicon clock drivers (Rosen Penev)
 - Various fixes and cleanups from Akari Tsuyukusa, Alexander A. Klimov,
   Brian Masney, David Carlier, David Laight, Min zhang, Myeonghun Pak,
   Pavel Löbl, Randy Dunlap, Rob Herring, Rosen Penev, Uwe Kleine-König,
   William Theesfeld, Xuyang Dong, and Yu-Chun Lin
 
 Signed-off-by: Brian Masney <bmasney@redhat.com>
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Merge tag 'clk-misc-for-v7.3' of ssh://github.com/masneyb/linux into clk-pile

Pull clk patches picked up by Brian Masney:

Here's various improvements and fixes for the clk subsystem that was posted prior
to the opening of the last merge window.

- Add spread spectrum clock (SSC) support to the clk framework, including a new
  assigned-clock-sscs devicetree property and clk_hw_set_spread_spectrum()
  API with KUnit tests (Peng Fan)
- Add SCMI clock OEM extensions for the i.MX95 clock driver and introduce a
  common SCMI clock header (Peng Fan)
- Add clock, reset, and devicetree bindings for the ESWIN EIC7700 HSP clock and
  reset generator (Xuyang Dong)
- Add clk_determine_rate_noop() helper for clock drivers that can do any rate,
  and convert existing open-coded implementations across hisilicon, imx, qcom,
  renesas, rp1, samsung, scpi, sprd, mediatek phy, and mediatek pmdomain
  drivers (Brian Masney)
- Add kernel-doc documentation for struct clk_core and the core clock flags,
  and wire up clk identifiers into the documentation build (Brian Masney)
- Fix clk_divider_bestdiv() returning the minimum rate instead of the maximum
  rate for large rate requests, with KUnit tests (Lad Prabhakar)
- Fix Nuvoton MA35D1 PLL frequency calculation including ignored div_u64
  return values, incorrect PLL_CTL1_FRAC bit field width, and broken
  determine_rate logic (Joey Lu)
- Support unique clock names for multi-socket Tegra platforms (Jon Hunter)
- Allow COMPILE_TEST builds for HiSilicon clock drivers (Rosen Penev)
- Various fixes and cleanups from Akari Tsuyukusa, Alexander A. Klimov,
  Brian Masney, David Carlier, David Laight, Min zhang, Myeonghun Pak,
  Pavel Löbl, Randy Dunlap, Rob Herring, Rosen Penev, Uwe Kleine-König,
  William Theesfeld, Xuyang Dong, and Yu-Chun Lin

Signed-off-by: Brian Masney <bmasney@redhat.com>
[sboyd@kernel.org: Fix allmodconfig modpost failure in scmi]

* tag 'clk-misc-for-v7.3' of ssh://github.com/masneyb/linux: (53 commits)
  pmdomain: mediatek: mtk-mfg: use clk_determine_rate_noop()
  pmdomain: mediatek: airoha: use clk_determine_rate_noop()
  phy: mediatek: phy-mtk-hdmi-mt2701: use clk_determine_rate_noop()
  clk: sprd: use clk_determine_rate_noop()
  clk: scpi: use clk_determine_rate_noop()
  clk: samsung: acpm: use clk_determine_rate_noop()
  clk: rp1: use clk_determine_rate_noop()
  clk: renesas: rzg2l-cpg: use clk_determine_rate_noop()
  clk: qcom: smd-rpm: use clk_determine_rate_noop()
  clk: qcom: rpmh: use clk_determine_rate_noop()
  clk: qcom: rpm: use clk_determine_rate_noop()
  clk: imx: scu: use clk_determine_rate_noop()
  clk: hisilicon: hi3660-stub: use clk_determine_rate_noop()
  clk: add clk_determine_rate_noop()
  clk: imx: scu: drop redundant init.ops variable assignment
  clk: test: convert constants to use HZ_PER_MHZ
  docs: clk: include some identifiers to keep documentation up to date
  clk: add kernel docs for struct clk_core
  clk: add kernel docs for the core flags
  clk: hisilicon: allow COMPILE_TEST builds
  ...
History 2026-08-17 09:27:10 -07:00
arch - Prevent OOB access in the resctrl code while offlining 2026-07-05 05:37:46 -10:00
block block: handle REQ_OP_ZONE_APPEND in __bio_integrity_action 2026-06-24 06:53:25 -06:00
certs treewide: fix indentation and whitespace in Kconfig files 2026-05-28 21:24:42 -07:00
crypto mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 2026-06-21 13:20:19 -07:00
Documentation clk: various improvements and fixes 2026-08-17 09:27:10 -07:00
drivers clk: various improvements and fixes 2026-08-17 09:27:10 -07:00
fs - Prevent OOB access in the resctrl code while offlining 2026-07-05 05:37:46 -10:00
include clk: various improvements and fixes 2026-08-17 09:27:10 -07:00
init mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 2026-06-21 13:20:19 -07:00
io_uring io_uring-7.2-20260625 2026-06-25 09:53:31 -07:00
ipc kernel-7.2-rc1.misc 2026-06-15 03:05:50 +05:30
kernel Misc perf events fixes: 2026-07-05 05:34:43 -10:00
lib RISC-V updates for v7.2-rc2 2026-07-03 15:07:24 -10:00
LICENSES LICENSES: Add modern form of the LGPL-2.1 tags to the usage guide section 2025-10-22 07:58:19 +02:00
mm block-7.2-20260625 2026-06-25 09:56:47 -07:00
net Split <linux/mod_devicetable.h> in per subsystem headers 2026-07-02 20:54:26 -10:00
rust Rust changes for v7.2 (addendum) 2026-06-24 15:11:08 -07:00
samples tracing/events: Fix to check the simple_tsk_fn creation 2026-06-30 23:58:19 +09:00
scripts scripts/sorttable: Handle RISC-V patchable ftrace entries 2026-06-25 13:15:03 -06:00
security bpf: Reject BPF_MAP_TYPE_INODE_STORAGE creation if BPF LSM is uninitialized 2026-06-30 16:31:56 +02:00
sound sound fixes for 7.2-rc2 2026-07-05 05:26:45 -10:00
tools Misc perf events fixes: 2026-07-05 05:34:43 -10:00
usr kbuild: uapi: also test UAPI headers against C++ compilers 2026-03-25 13:24:42 +01:00
virt s390: 2026-06-25 10:21:13 -07:00
.clang-format clang-format: fix formatting of guard() and scoped_guard() statements 2026-05-28 21:24:41 -07:00
.clippy.toml rust: bump Clippy's MSRV and clean incompatible_msrv allows 2026-04-07 09:51:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig editorconfig: add rst extension 2026-01-26 19:07:09 -08:00
.get_maintainer.ignore .get_maintainer.ignore: add myself 2026-04-02 16:48:25 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore SPDX patches for 7.2-rc1 2026-06-22 12:06:22 -07:00
.mailmap MAINTAINERS: Update Jason Wang's email address 2026-06-29 19:09:00 -07:00
.pylintrc docs: Move the python libraries to tools/lib/python 2025-11-18 09:22:40 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 2026-06-21 13:20:19 -07:00
Kbuild checksyscalls: move instance functionality into generic code 2026-04-05 09:21:32 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS clk: various improvements and fixes 2026-08-17 09:27:10 -07:00
Makefile Linux 7.2-rc2 2026-07-05 14:44:06 -10:00
README docs: add AI Coding Assistants documentation 2026-01-06 14:55:06 -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