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Merge branch 'docs/add_description_for_pd_top_gpio_configuration' into 'master'

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docs(esp_pm): Adding notes on configuring GPIOs when using PD_TOP sleep

Closes IDFGH-12085 and IDFGH-13186

See merge request espressif/esp-idf!29097
This commit is contained in:
Wu Zheng Hui
2024-02-22 16:11:47 +08:00
parent b8e2342bf8 d688492fe9
commit 3560d20a2e
3 changed files with 24 additions and 10 deletions
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docs/en/api-reference/system/power_management.rst
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@@ -169,6 +169,10 @@ Light-sleep Peripheral Power Down
For peripherals that do not support Light-sleep context retention, if the Power management is enabled, the ``ESP_PM_NO_LIGHT_SLEEP`` lock should be held when the peripheral is working to avoid losing the working context of the peripheral when entering sleep.
.. note::
When the peripheral power domain is powered down during sleep, both the IO_MUX and GPIO modules are inactive, meaning the chip pins' state is not maintained by these modules. To preserve the state of an IO during sleep, it's essential to call :cpp:func:`gpio_hold_dis` and :cpp:func:`gpio_hold_en` before and after configuring the GPIO state. This action ensures that the IO configuration is latched and prevents the IO from becoming floating while in sleep mode.
API Reference
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