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Merge branch 'feature/move_target_kconfig_2' into 'master'

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system: move kconfig options out of target component

See merge request espressif/esp-idf!17321
This commit is contained in:
Marius Vikhammer
2022-04-24 13:29:43 +08:00
parent 5bb2379bac d2872095f9
commit 45c1d1cba2
174 changed files with 1455 additions and 1723 deletions
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docs/en/api-guides/performance/speed.rst
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@@ -128,9 +128,9 @@ In addition to the overall performance improvements shown above, the following o
- Minimizing the :ref:`CONFIG_LOG_DEFAULT_LEVEL` and :ref:`CONFIG_BOOTLOADER_LOG_LEVEL` has a large impact on startup time. To enable more logging after the app starts up, set the :ref:`CONFIG_LOG_MAXIMUM_LEVEL` as well and then call :cpp:func:`esp_log_level_set` to restore higher level logs. The :example:`system/startup_time` main function shows how to do this.
- If using deep sleep, setting :ref:`CONFIG_BOOTLOADER_SKIP_VALIDATE_IN_DEEP_SLEEP` allows a faster wake from sleep. Note that if using Secure Boot this represents a security compromise, as Secure Boot validation will not be performed on wake.
- Setting :ref:`CONFIG_BOOTLOADER_SKIP_VALIDATE_ON_POWER_ON` will skip verifying the binary on every boot from power-on reset. How much time this saves depends on the binary size and the flash settings. Note that this setting carries some risk if the flash becomes corrupt unexpectedly. Read the help text of the :ref:`config item <CONFIG_BOOTLOADER_SKIP_VALIDATE_ON_POWER_ON>` for an explanation and recommendations if using this option.
- It's possible to save a small amount of time during boot by disabling RTC slow clock calibration. To do so, set :ref:`CONFIG_{IDF_TARGET_CFG_PREFIX}_RTC_CLK_CAL_CYCLES` to 0. Any part of the firmware that uses RTC slow clock as a timing source will be less accurate as a result.
- It's possible to save a small amount of time during boot by disabling RTC slow clock calibration. To do so, set :ref:`CONFIG_RTC_CLK_CAL_CYCLES` to 0. Any part of the firmware that uses RTC slow clock as a timing source will be less accurate as a result.
The example project :example:`system/startup_time` is pre-configured to optimize startup time. The files :example_file:`system/startup_time/sdkconfig.defaults` and :example_file:`system/startup_time/sdkconfig.defaults.{IDF_TARGET_PATH_NAME}` contain all of these settings. You can append these to the end of your project's own ``sdkconfig`` file to merge the settings, but please read the documentation for each setting first.
The example project :example:`system/startup_time` is pre-configured to optimize startup time. The file :example_file:`system/startup_time/sdkconfig.defaults` contain all of these settings. You can append these to the end of your project's own ``sdkconfig`` file to merge the settings, but please read the documentation for each setting first.
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