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Andy Ross 29b99aa93a soc/intel_adsp: Add MP startup delay on cAVS 1.5
Investigation by Kai Vehmanen has shown that there is a very short
delay needed before starting the secondary core on cAVS 1.5 hardware.
What we finally realized is happening is that on these devices,
secondary core power is managed by the host.  The cavs-fw.py test
integration powers the second core on at system startup and lets
Zephyr start it later, but SOF will power it up and send an IPC to the
firmware immediately.

There is a period after power-up but before the ROM is available
(unclear whether this is a race vs. hardware, the ROM firmware, or the
kernel driver, or potentially some combination); interrupts latched
earlier than that seem to be cleared by CPU initialization.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2021-12-07 12:09:02 -05:00
.buildkite ci: Update to Zephyr SDK 0.13.2 2021-11-25 06:58:45 -05:00
.github actions: reset git tree after rebase issues/conflict 2021-12-05 10:53:50 -05:00
arch drivers: timer: cortex_m_systick: improve ISR installation 2021-12-04 07:34:53 -05:00
boards soc/intel_adsp_cavs15: Use new IDC driver 2021-12-07 12:09:02 -05:00
cmake cmake: fix multiple shield parsing 2021-12-06 08:12:18 -05:00
doc boards: Add mps3-an547-ns target; build mps3-an547 with TFM in secure mode 2021-12-07 10:44:23 -06:00
drivers drivers: gpio: revert kconfig init priority for off-chip gpios 2021-12-07 09:53:45 -06:00
dts soc/intel_adsp_cavs15: Use new IDC driver 2021-12-07 12:09:02 -05:00
include drivers: counter: NXP SNVS rtc: Add support for NXP imx SNVS RTC 2021-12-07 09:45:43 -06:00
kernel debug: gdbstub: remove start argument from z_gdb_main_loop() 2021-11-30 15:24:00 -05:00
lib drivers: timer: improve sys_timer_disable usage 2021-12-04 07:34:53 -05:00
misc cmake: kconfig: fix issue if Kconfig symbol name contains lower case 2021-11-18 13:56:07 +01:00
modules boards: Add mps3-an547-ns target; build mps3-an547 with TFM in secure mode 2021-12-07 10:44:23 -06:00
samples samples: net: sockets: echo server/client add 6locan to yaml 2021-12-06 08:15:14 -05:00
scripts scripts: gen_dts_cmake: emit properties for /aliases 2021-12-06 08:01:48 -05:00
share cmake: check zephyr version if specified and ZEPHYR_BASE is set 2021-05-25 16:48:35 -05:00
soc soc/intel_adsp: Add MP startup delay on cAVS 1.5 2021-12-07 12:09:02 -05:00
submanifests west.yml: allow users to easily add more modules 2021-10-07 13:45:42 +02:00
subsys Bluetooth: Audio: Bugfix: Fix output message 2021-12-07 09:42:00 -06:00
tests tests: drivers: counter: Generic seconds counter test 2021-12-07 09:45:43 -06:00
.checkpatch.conf checkpatch: Ignore IS_ENABLED_CONFIG warnings 2021-10-18 08:28:01 -04:00
.clang-format clang-format: Change lines length limit from 80 to 100 2021-05-06 08:13:32 -05:00
.codecov.yml
.editorconfig
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore gitignore: ignore macos DS_Store files 2021-11-03 16:14:20 -04:00
.gitlint gitlint: Make commit message line size be compatible with checkpatch.pl 2021-12-01 09:37:11 +01:00
.mailmap mailmap: update mailmap file with some stray emails 2021-06-17 14:15:41 -04:00
.uncrustify.cfg uncrustify: force a single EOF newline 2021-11-03 16:14:20 -04:00
CMakeLists.txt cmake: cleanup all intermediate build files. 2021-11-25 18:22:32 -05:00
CODE_OF_CONDUCT.md
CODEOWNERS codeowners: drivers: timer: include Kconfig files 2021-12-04 07:34:53 -05:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: fix typo in compiler options 2021-11-16 12:12:58 -05:00
LICENSE
MAINTAINERS.yml ITE MAINTAINERS: add tachometer path for compliance check 2021-11-29 08:25:19 -05:00
README.rst doc: replace buildkite with github actions 2021-11-24 12:37:30 -05:00
VERSION VERSION: bump main branch to 2.7.99 2021-09-30 06:36:53 -04:00
version.h.in
west.yml drivers: counter: NXP SNVS rtc: Add support for NXP imx SNVS RTC 2021-12-07 09:45:43 -06:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/_static/images/logo-readme.png">
     </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-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, 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:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/getting_started/index.html#asking-for-help