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Tim Lin 64b2bd7342 I2C: add a define that can write a specified speed from dts
So far the I2C channel connected to the battery has chosen the option
of Standard-mode 100KHz, but according to the SI(Signal Integrity)
test report, the I2C channel doesn’t meet the tHD;DAT Margin/Threshold
in the SI test. In fact, the timing could be adjusted by changing the
settings in the related timing registers in EC, but unfortunately the
limitation exists due to the fact that the timing registers have been
currently occupied by another channel for the same reason, that is,
adjusting the timing.

However, according to the I2C specification, the Standard-mode (Sm)
has a bit rate up to 100 kbit/s, so far the battery use the option
of standard mode 100KHz in the SMCLK setting register. This SMCLK
setting register also provides standard mode 50KHz for usage.
According to another SI test reports, so far the Standard-mode 50KHz
setting looks good in the SI test.

Therefore, add a #define I2C_SPEED_DT allows the device tree to
write a specified speed without causing i2c_configure() and
i2c_get_config() to return error.

Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>
2022-03-22 20:30:38 -04:00
.github modules: fff: Fix issue with tests being skipped in CI 2022-03-22 12:33:58 +01:00
arch arch/riscv: Adding KConfig options for 'A' and 'M' RISC-V extensions 2022-03-22 18:00:32 -04:00
boards zefi: Add an EFI boot argument passing ACPI RSDP info 2022-03-22 09:56:54 -04:00
cmake arch/riscv: Adding KConfig options for 'A' and 'M' RISC-V extensions 2022-03-22 18:00:32 -04:00
doc Bluetooth: Mesh: Add warning about RPL persistence 2022-03-22 12:35:15 +01:00
drivers wifi: esp_at: disable CWMODE auto connect 2022-03-22 12:36:50 +01:00
dts ipc_service: Add new backend based on custom messaging buffer 2022-03-22 12:36:39 +01:00
include I2C: add a define that can write a specified speed from dts 2022-03-22 20:30:38 -04:00
kernel sched: formalize the passing of NULL to z_get_next_switch_handle() 2022-03-18 13:32:49 -04:00
lib everywhere: fix typos 2022-03-18 13:24:08 -04:00
misc cmake: only write devicetree files when there are changes. 2022-02-11 15:47:09 +01:00
modules modules: cmsis: integrate CMSIS-NN 2022-03-22 12:56:02 +01:00
samples ipc_service: samples: Add sample that uses icmsg backend 2022-03-22 12:36:39 +01:00
scripts twister: support retrying on build errors 2022-03-22 12:09:14 -04:00
share everywhere: fix typos 2022-03-18 13:24:08 -04:00
soc soc: disable pinmux driver for nxp kinetis SOCs 2022-03-22 12:36:04 +01:00
submanifests west.yml: allow users to easily add more modules 2021-10-07 13:45:42 +02:00
subsys mgmt/mcumgr/lib: Fix unneeded stats gathering when container failed 2022-03-22 14:49:35 +01:00
tests boards: Add Proteus-II board file 2022-03-22 07:52:05 -05:00
.checkpatch.conf checkpatch: Ignore IS_ENABLED_CONFIG warnings 2021-10-18 08:28:01 -04:00
.clang-format
.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: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap
.uncrustify.cfg uncrustify: force a single EOF newline 2021-11-03 16:14:20 -04:00
CMakeLists.txt everywhere: fix typos 2022-03-18 13:24:08 -04:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: Add stephanosio as .github codeowner 2022-03-18 13:33:12 -04:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: tweak Kconfig prompts 2022-03-09 15:35:54 +01:00
LICENSE
MAINTAINERS.yml maintainers: set henrikbrixandersen as canbus maintainer 2022-03-21 10:16:04 +01:00
README.rst readme: make README logo dark-mode aware 2022-02-15 19:47:48 +01:00
VERSION VERSION: bump patchlevel to 99 2022-02-21 19:05:46 -05:00
version.h.in cmake: version.h generation performed at build time 2022-02-08 07:50:24 -05:00
west.yml modules: cmsis: integrate CMSIS-NN 2022-03-22 12:56:02 +01:00
zephyr-env.cmd
zephyr-env.sh everywhere: fix typos 2022-03-18 13:24:08 -04:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/_static/images/logo-readme.svg">
     </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