update pm document with changes in bluetooth that supports automatic light sleep...

If bluetooth modem sleep is enabled and "External 32kHz crystal" is used as bluetooth sleep clock, the power management lock "ESP_PM_NO_LIGHT_SLEEP" in bluetooth is released for the periods of time when Bluetooth enters modem sleep. In this case automatic light sleep is allowed.

diff --git a/docs/en/api-reference/system/power_management.rst b/docs/en/api-reference/system/power_management.rst
index 95d5ccc79db1b91f1bb291cb4131fa6a9591a299..a10b9b03bc4085f850250227acf3e48894cce224 100644 (file)
--- a/docs/en/api-reference/system/power_management.rst
+++ b/docs/en/api-reference/system/power_management.rst
@@ -127,7 +127,7 @@ The following drivers will hold the ``ESP_PM_APB_FREQ_MAX`` lock while the drive
 - **SPI slave**: between calls to :cpp:func:`spi_slave_initialize` and :cpp:func:`spi_slave_free`.
 - **Ethernet**: between calls to :cpp:func:`esp_eth_enable` and :cpp:func:`esp_eth_disable`.
 - **WiFi**: between calls to :cpp:func:`esp_wifi_start` and :cpp:func:`esp_wifi_stop`. If modem sleep is enabled, the lock will be released for the periods of time when radio is disabled.
-- **Bluetooth**: between calls to :cpp:func:`esp_bt_controller_enable` and :cpp:func:`esp_bt_controller_disable`. If Bluetooth modem sleep is enabled, the ``ESP_PM_APB_FREQ_MAX`` lock will be released for the periods of time when radio is disabled. However the ``ESP_PM_NO_LIGHT_SLEEP`` lock will still be held.
+- **Bluetooth**: between calls to :cpp:func:`esp_bt_controller_enable` and :cpp:func:`esp_bt_controller_disable`. If Bluetooth modem sleep is enabled, the ``ESP_PM_APB_FREQ_MAX`` lock will be released for the periods of time when radio is disabled. However the ``ESP_PM_NO_LIGHT_SLEEP`` lock will still be held, unless :ref:`CONFIG_BTDM_LOW_POWER_CLOCK` option is set to "External 32kHz crystal".
 - **CAN**: between calls to :cpp:func:`can_driver_install` and :cpp:func:`can_driver_uninstall`.
 
 The following peripheral drivers are not aware of DFS yet. Applications need to acquire/release locks themselves, when necessary: