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doc: release-notes-3.6: PM related changes 

Power management release notes for 3.6

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
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Flavio Ceolin 2024-02-15 22:57:21 -08:00 committed by Maureen Helm
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doc/releases/release-notes-3.6.rst
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@ -1032,6 +1032,24 @@ Libraries / Subsystems
* STM32F4 devices now support stop mode thanks to the use of a RTC based idle timer which
keeps track of tick evolution while cortex systick is off.
* :c:func:`pm_device_runtime_put_async()` got a parameter to specify a minimum delay to
the operation. This is useful to avoid multiple states transitions when a device is used.
* Devices that don't need to block when suspending or resuming can now be defined as ISR
safe (``PM_DEVICE_ISR_SAFE``). For those devices, Zephyr is able to reduces RAM consumption
and runtime device power management can be safely used from interruptions.
* Optimizations in device runtime power management. :c:func:`pm_device_runtime_get` and
:c:func:`pm_device_runtime_put` no longer wait for a pending operation to be concluded if it is still
in the work queue. In this case the pending work is just canceled and the device state updated.
* The Kconfig options bellow were added to customize the initialization priority of different
power domains.
* :kconfig:option:`CONFIG_POWER_DOMAIN_GPIO_INIT_PRIORITY`
* :kconfig:option:`CONFIG_POWER_DOMAIN_GPIO_MONITOR_INIT_PRIORITY`
* :kconfig:option:`CONFIG_POWER_DOMAIN_INTEL_ADSP_INIT_PRIORITY`
* Random
* Crypto