ae7124abe3
This commit implements a workaround that allows ESP32-C5 to run at 240MHz CPU frequency normally, while automatically reducing CPU frequency during encrypted flash writes to ensure correct operation. The frequency limit is chip revision dependent: - v1.2 and above: limited to 160MHz during encrypted writes - v1.0 and below: limited to 80MHz during encrypted writes Key implementation details: - Frequency limiting is triggered automatically when esp_flash_write_encrypted() is called - Uses start() flags (ESP_FLASH_START_FLAG_LIMIT_CPU_FREQ) to integrate with OS layer - Works with both PM enabled and disabled configurations - Frequency is automatically restored after encrypted write completes - For ESP32-C5 with 120MHz flash, Flash clock and timing registers are adjusted when CPU frequency is reduced to 80MHz - SPI1 timing registers are configured during frequency switching since encrypted writes use SPI1 and must work correctly at reduced CPU frequencies Code improvements: - Use SOC_MSPI_FREQ_AXI_CONSTRAINED capability macro instead of hardcoded chip checks - Control workaround via Kconfig (CONFIG_PM_WORKAROUND_FREQ_LIMIT_ENABLED) instead of hardcoded macros - Add comprehensive test cases covering various PM configurations and edge cases This workaround enables ESP32-C5 applications to benefit from 240MHz CPU performance while maintaining reliable encrypted flash write functionality.
Documentation Source Folder
This folder contains source files of ESP-IDF documentation available in English and 中文.
The sources do not render well in GitHub and some information is not visible at all.
Use actual documentation generated within about 20 minutes on each commit:
Hosted Documentation
- English: https://docs.espressif.com/projects/esp-idf/en/latest/
- 中文: https://docs.espressif.com/projects/esp-idf/zh_CN/latest/
After you click any link to ESP-IDF Programming Guide, go to the top of the sidebar, then make sure you have the correct Espressif chip (target) and ESP-IDF version selected in the dropdown menus. You can also find a link on the bottom right to download the PDF version.
Building Documentation
The documentation is built using the python package esp-docs, which can be installed by running:
pip install esp-docs
For a summary of available options, run:
build-docs --help
For more information see the esp-docs documentation at https://github.com/espressif/esp-docs/blob/master/README.md