doc: matter: Added ZMS mentions to the Matter docs

Matter docs describe settings storage referring to the NVS module.
It was fixed to mention also ZMS module and explain when to select
the specific backend implementation.

Signed-off-by: Kamil Kasperczyk <[email protected]>

Author: kkasperczyk-no

doc/nrf/protocols/matter/end_product/bootloader.rst

@@ -66,9 +66,19 @@ The nRF Connect platform in Matter uses Zephyr's :ref:`zephyr:settings_api` API
 This requires that you define the ``settings_storage`` partition in the flash.
 The recommended minimum size of the partition is 32 kB, but you can reserve even more space if your application uses the storage extensively.
 
-The Zephyr settings storage is implemented by the Zephyr NVS (Non-Volatile Storage) module.
-The NVS uses multiple sectors of 4 kB each and it has to use the appropriate number of sectors to cover all settings partition area.
-To configure the number of sectors used by the NVS, set the :kconfig:option:`CONFIG_SETTINGS_NVS_SECTOR_COUNT` Kconfig option to the desired value.
+The Zephyr settings storage is implemented by the :ref:`Zephyr NVS (Non-Volatile Storage) <zephyr:nvs_api>` or :ref:`ZMS (Zephyr Memory Storage) <zephyr:zms_api>` backends.
+You can select either backend, and the selection affects several factors, such as the operational performance or memory lifetime.
+To achieve the optimal experience, it is recommended to use:
+
+* NVS backend for the flash-based nRF52 and nRF53 SoC families.
+* ZMS backend for the RRAM- and MRAM-based nRF54 SoC families.
+
+The settings backend uses multiple sectors of 4 kB each, and it must use the appropriate number of sectors to cover the entire settings partition area.
+To configure the number of sectors used by the backend, set the corresponding Kconfig option to the desired value:
+
+* :kconfig:option:`CONFIG_SETTINGS_NVS_SECTOR_COUNT` for the NVS
+* :kconfig:option:`CONFIG_SETTINGS_ZMS_SECTOR_COUNT` for the ZMS
+
 For example, to cover a settings partition of 32 kB in size, you require 8 sectors.
 
 As you can see in :ref:`ug_matter_hw_requirements_layouts`, Matter samples in the |NCS| reserve exactly 32 kB for the ``settings_storage`` partition.

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

@@ -98,7 +98,7 @@ See :doc:`matter:nrfconnect_examples_cli` in the Matter documentation for the li
 Matter Settings shell commands
 ------------------------------
 
-You can enable the Matter Settings shell commands to monitor the current usage of the Zephyr Settings NVS.
+You can enable the Matter Settings shell commands to monitor the current usage of the Zephyr Settings using :ref:`NVS (Non-Volatile Storage) <zephyr:nvs_api>` or :ref:`ZMS (Zephyr Memory Storage) <zephyr:zms_api>` backends.
 These commands are useful for verifying that the ``settings`` partition has the proper size and meets the application requirements.
 
 To enable the Matter Settings shell module, set the :kconfig:option:`CONFIG_NCS_SAMPLE_MATTER_SETTINGS_SHELL` Kconfig option to ``y``.
@@ -111,10 +111,6 @@ You can use the following shell commands:
 * ``matter_settings current`` - Get the size of the current settings usage.
 * ``matter_settings free`` - Get the size of the current free settings space.
 
-.. note::
-
-  The Matter Settings shell module is available only for the NVS Zephyr Settings backend.
-
 .. _ug_matter_configuring_device_identification:
 
 Matter device identification