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Erwan Gouriou b98c7942ca pm: console: Use async runtime put to minimize resumption/suspension
When device runtime pm is enabled on console device, do not suspend
device synchronously on each char transmission, but rather use asynchronous
suspension request.
This will save useless and costly suspension/resumption procedure, which
can involve uart device clock suspension but also pin configuration
to sleep state (which itself involves gpio clock activation ...).

On STM32, using asynch device suspension allows to divide by 3 the
transmission time of a character chain.

Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>
2024-01-18 10:51:10 +01:00
.github CI bsim workflow: Add UART tests to the bsim workflow 2024-01-16 14:55:07 -05:00
arch x86: add CODE_UNREACHABLE to z_x86_cpu_init 2024-01-17 11:57:20 -05:00
boards boards: qemu_x86_64: amend DTS to have 2 CPU nodes 2024-01-17 11:57:20 -05:00
cmake cmake: code_relocation: Re-run when relocation_dict.txt changes 2024-01-15 13:20:17 +01:00
doc Bluetooth: Audio: Shell: CAP change volume command 2024-01-17 12:00:09 -05:00
drivers pm: console: Use async runtime put to minimize resumption/suspension 2024-01-18 10:51:10 +01:00
dts dts: arm: nxp_rt5xx: add definition of the DMIC to devicetree 2024-01-17 14:43:52 +01:00
include/zephyr drivers: allow changing max31865 three-wire mode at runtime 2024-01-17 13:01:24 -05:00
kernel kernel: move z_init_cpu to private kernel headers 2024-01-17 11:57:20 -05:00
lib posix: pthread: allow oldstate & oldtype to be NULL 2024-01-17 14:42:50 +01:00
misc cmake: modules: dts: use devicetree stub file 2023-10-20 12:18:17 -07:00
modules tfm: Provide properties for selected TF-M toolchain for NS application 2024-01-17 16:52:52 +01:00
samples tfm: Provide properties for selected TF-M toolchain for NS application 2024-01-17 16:52:52 +01:00
scripts scripts: twister: snippet roots from modules 2024-01-17 13:02:22 -05:00
share sysbuild: kconfig: Unset shield config value variable 2024-01-02 12:02:21 +00:00
snippets snippets: xen_dom0: add support for Renesas R-Car Gen3 boards 2023-09-15 11:15:00 +01:00
soc soc: intel_adsp: call framework callback function for restore 2024-01-17 11:57:20 -05:00
submanifests modules: sof: use k_smp_cpu_custom_start for core power up 2024-01-17 11:57:20 -05:00
subsys pm: console: Use async runtime put to minimize resumption/suspension 2024-01-18 10:51:10 +01:00
tests tests: Bluetooth: CAP commander volume_change unit tests 2024-01-17 12:00:09 -05:00
.checkpatch.conf checkpatch: Remove ext/ from excludes 2022-11-30 12:06:55 -05:00
.clang-format Build System: clang-format: add K_SPINLOCK to FOR_EACH 2023-12-26 19:36:01 +00:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes
.gitignore scripts: compliance: add a compliance check to keep blocks of code sorted 2023-11-13 09:41:05 +01:00
.gitlint .gitlint: de-duplicate defaults with zephyr_commit_rules.py 2023-09-21 09:29:24 +02:00
.mailmap mailmap: sort alphabetically 2023-05-15 13:23:32 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt scripts: zspdx: Include modules as packages in zephyr.spdx 2024-01-09 09:59:57 +01:00
CODE_OF_CONDUCT.md coc: Update Code of Conduct to latest Contributor Covenant 2023-12-21 09:38:23 +00:00
CODEOWNERS dts: arm/riscv: gigadevice: s/gigadevice/gd 2024-01-10 20:59:21 -05:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: Deprecate BOOTLOADER_SRAM_SIZE 2024-01-08 10:06:24 +01:00
LICENSE
MAINTAINERS.yml MAINTAINERS: retire myself as DT maintainer 2024-01-17 17:13:41 -08:00
README.rst doc: README: Rework Resources section 2023-10-17 19:05:20 +03:00
VERSION release: bump main to v3.5.99 2023-10-20 14:32:45 +03:00
version.h.in kernel: banner: Allow for customising version 2023-08-21 10:09:46 +02:00
west.yml manifest: Update nrf hw models to latest 2024-01-17 16:10:17 +00:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
   <img
   src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

Getting Started
---------------

  | 📖 `Zephyr Documentation`_
  | 🚀 `Getting Started Guide`_
  | 🙋🏽 `Tips when asking for help`_
  | 💻 `Code samples`_

Code and Development
--------------------

  | 🌐 `Source Code Repository`_
  | 📦 `Releases`_
  | 🤝 `Contribution Guide`_

Community and Support
---------------------

  | 💬 `Discord Server`_ for real-time community discussions
  | 📧 `User mailing list (users@lists.zephyrproject.org)`_
  | 📧 `Developer mailing list (devel@lists.zephyrproject.org)`_
  | 📬 `Other project mailing lists`_
  | 📚 `Project Wiki`_

Issue Tracking and Security
---------------------------

  | 🐛 `GitHub Issues`_
  | 🔒 `Security documentation`_
  | 🛡️ `Security Advisories Repository`_
  | ⚠️ Report security vulnerabilities at vulnerabilities@zephyrproject.org

Additional Resources
--------------------
  | 🌐 `Zephyr Project Website`_
  | 📺 `Zephyr Tech Talks`_

.. _Zephyr Project Website: https://www.zephyrproject.org
.. _Discord Server: https://chat.zephyrproject.org
.. _supported boards: https://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: https://docs.zephyrproject.org
.. _Introduction to Zephyr: https://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: https://docs.zephyrproject.org/latest/contribute/index.html
.. _Source Code Repository: https://github.com/zephyrproject-rtos/zephyr
.. _GitHub Issues: https://github.com/zephyrproject-rtos/zephyr/issues
.. _Releases: https://github.com/zephyrproject-rtos/zephyr/releases
.. _Project Wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _User mailing list (users@lists.zephyrproject.org): https://lists.zephyrproject.org/g/users
.. _Developer mailing list (devel@lists.zephyrproject.org): https://lists.zephyrproject.org/g/devel
.. _Other project mailing lists: https://lists.zephyrproject.org/g/main/subgroups
.. _Code samples: https://docs.zephyrproject.org/latest/samples/index.html
.. _Security documentation: https://docs.zephyrproject.org/latest/security/index.html
.. _Security Advisories Repository: https://github.com/zephyrproject-rtos/zephyr/security
.. _Tips when asking for help: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help
.. _Zephyr Tech Talks: https://www.zephyrproject.org/tech-talks