samples: matter: Optimized LIT configuration

The LIT configuration in Matter samples can be slightly changed
to achieve lower power consumption.

Additionally, added piece of documentation explaining how to
configure the radio driver calibration period.

Signed-off-by: Kamil Kasperczyk <kamil.kasperczyk@nordicsemi.no>

Author: kkasperczyk-no

doc/nrf/protocols/matter/getting_started/low_power_configuration.rst

@@ -288,6 +288,26 @@ Configure radio transmitter power
 
 See :ref:`ug_matter_gs_transmission_power` for more information.
 
+.. _ug_matter_device_low_power_calibration_period:
+
+Configure radio driver temperature calibration period
+*****************************************************
+
+The radio driver requires periodic calibration events to compensate the potential temperature changes that may affect the clock configuration.
+How often the calibration should take place depends on the device's environment and the temperature changes the device is exposed to.
+For example, a device that is mobile or installed outdoors likely requires shorter calibration period than a device that is installed indoors.
+
+Additionally, the calibration period has an impact on the device's power consumption, because it results in device wake-ups.
+It is recommended not to use a calibration period value smaller than required to avoid the unnecessary increase in power consumption.
+
+You can configure the calibration period using the following Kconfig options:
+
+* :kconfig:option:`CONFIG_NRF_802154_TEMPERATURE_UPDATE_PERIOD` -  Configures the 802.15.4 radio driver calibration period in milliseconds.
+  The default value is 60000 ms (60 s), which is optimal for most use cases.
+* :kconfig:option:`CONFIG_MPSL_CALIBRATION_PERIOD` - Configures Multiprotocol Service Layer (MPSL) driver calibration period in milliseconds.
+  This is used only, if the application uses LFRC or it is run on an nRF54L Series SoC.
+  The default value is 4000 ms (4 s), which is likely too aggressive for most use cases.
+
 Disable unused RAM sections
 ***************************
 

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -140,6 +140,7 @@ Matter
 ------
 
 * Added a new documentation page :ref:`ug_matter_group_communication` in the :ref:`ug_matter_intro_overview`.
+* Added a new documentation section :ref:`ug_matter_device_low_power_calibration_period` in the :ref:`ug_matter_device_low_power_configuration`.
 
 * Disabled the :ref:`mpsl` before performing factory reset to speed up the process.
 * Added :ref:`ug_matter_debug_snippet`.

samples/matter/light_switch/snippets/lit_icd/lit_icd.conf

@@ -7,5 +7,12 @@
 # Enable LIT ICD configuration
 CONFIG_CHIP_ICD_LIT_SUPPORT=y
 CONFIG_CHIP_ICD_SIT_SLOW_POLL_LIMIT=5000
+
+# Use the same value as CONFIG_CHIP_ICD_IDLE_MODE_DURATION
+CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=300000
+
+# Use greater than default (200 ms) value to limit the impact of Active Threshold Duration on power consumption
+CONFIG_CHIP_ICD_FAST_POLLING_INTERVAL=500
+
 CONFIG_CHIP_ICD_REPORT_ON_ACTIVE_MODE=y
 CONFIG_NCS_SAMPLE_MATTER_ZAP_FILES_PATH="snippets/lit_icd"

samples/matter/smoke_co_alarm/Kconfig

@@ -22,6 +22,14 @@ config CHIP_ICD_LIT_SUPPORT
 config CHIP_ICD_SIT_SLOW_POLL_LIMIT
 	default 5000
 
+# Use the same value as CONFIG_CHIP_ICD_IDLE_MODE_DURATION
+config CHIP_ICD_SLOW_POLL_INTERVAL
+	default 300000
+
+# Use greater than default (200 ms) value to limit the impact of Active Threshold Duration on power consumption
+config CHIP_ICD_FAST_POLLING_INTERVAL
+	default 500
+
 config CHIP_ICD_REPORT_ON_ACTIVE_MODE
 	default y