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Tomasz Moń d76934daeb dt-bindings: usb: initial USB Audio Class 2 support
USB Audio Class 2 (UAC2) includes a method to describe audio device
topology to host using a set of class specific descriptors. The audio
device description includes complete sample clock topology and audio
processing organization.

Zephyr specific bindings are supposed to allow user to create reasonably
simple audio device description using devicetree syntax. The bindings
currently include only the absolute minimum set required for headset
example. Bindings for other entities (Clock Selector, Clock Multiplier,
Mixer Unit, Selector Unit, Feature Unit, Sample Rate Converter,
variuos Effect Units, various Processing Units, Extension Unit) can be
added later together with the actual USB class implementation.

The main idea is that user does create one zephyr,uac2 compatible node
for every USB Audio 2 class instance. Note that in majority of cases
just one USB Audio 2 class is necessary because the number of streaming
interfaces is virtually unlimited (USB Audio 2 class can have up to 255
entities). The zephyr,uac2 node includes child nodes with compatibles
set to desired entity or audiostreaming interface. The parent-child
relationship is necessary to allow grouping entities to correct audio
class instance.

Signed-off-by: Tomasz Moń <tomasz.mon@nordicsemi.no>
2023-12-15 14:24:44 +01:00
.github CI codecov workflow: Switch to native_sim 2023-11-30 09:42:25 -05:00
arch llext: merge llext_mem and llext_section enums 2023-12-14 19:06:55 +00:00
boards arch: make CONFIG_EXCEPTION_DEBUG cross arch config 2023-12-14 09:32:27 +01:00
cmake cmake: remove deprecated XCC_USE_CLANG 2023-12-14 09:31:45 +01:00
doc doc: remove explicit libpython3.8-dev from Ubuntu deps 2023-12-15 14:08:04 +01:00
drivers drivers: dma_lpc: Suppport dest_scatter and source_gather 2023-12-15 14:04:52 +01:00
dts dt-bindings: usb: initial USB Audio Class 2 support 2023-12-15 14:24:44 +01:00
include/zephyr dt-bindings: usb: initial USB Audio Class 2 support 2023-12-15 14:24:44 +01:00
kernel debug: coredump: handle xtensa coredump like everyone else 2023-12-14 09:32:27 +01:00
lib posix: pthread_once: simplify and reduce size of pthread_once_t 2023-12-14 09:32:58 +01:00
misc cmake: modules: dts: use devicetree stub file 2023-10-20 12:18:17 -07:00
modules modules: hal_nordic: Add possibility to specify own source of the nrfx 2023-12-15 11:41:02 +00:00
samples samples: blinky: add verbose printf output 2023-12-15 11:20:03 +00:00
scripts twister: testplan: Platform key checking rationalisation in apply_filters 2023-12-15 11:32:15 +00:00
share sysbuild: images: mcuboot: Make application depend on bootloader 2023-12-12 15:31:16 +01:00
snippets snippets: xen_dom0: add support for Renesas R-Car Gen3 boards 2023-09-15 11:15:00 +01:00
soc intel_adsp: lnl: add missing definition for lnl 2023-12-14 22:22:22 +09:00
submanifests modules: canopennode: make the CANopenNode module optional 2023-10-26 09:48:26 +02:00
subsys mgmt: mcumgr: callback: Add op to receive callback 2023-12-15 11:48:59 +00:00
tests tests: net: socket: tcp: Fix build for nrf5340dk_nrf5340_cpuapp_ns 2023-12-15 14:05:55 +01:00
.checkpatch.conf
.clang-format
.codecov.yml
.editorconfig
.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
.yamllint
CMakeLists.txt init_priorities: Fix for native_simulator based targets 2023-11-27 12:19:03 +00:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: update codeowner for watchdog 2023-11-27 20:00:29 +01:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: Add image size reduction option 2023-12-12 15:31:16 +01:00
LICENSE
MAINTAINERS.yml MAINTAINERS: add myself as a collaborator for llext 2023-12-06 18:01:34 -05:00
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 gecko: EFR32BG22 Device files updated | Update to GSDK 4.3.2 2023-12-15 12:33:35 +01:00
zephyr-env.cmd
zephyr-env.sh

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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