applications: nrf_desktop: doc: dfu: align with IronSide SE

Updated the DFU application module that is part of the nRF Desktop
application to align with the IronSide SE architecture for the nRF54H20
SoC.

Ref: NCSDK-35488

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

Author: kapi-no

applications/nrf_desktop/doc/dfu.rst

@@ -27,7 +27,7 @@ Configuration
 
 You can use this module for the following devices:
 
-* nRF52, nRF53, and nRF54L Series - To perform the firmware upgrade, you must enable the bootloader.
+* nRF52, nRF53, and nRF54 Series - To perform the firmware upgrade, you must enable the bootloader.
   You can use the DFU module with either MCUboot or B0 bootloader.
   For more information on how to enable and configure a bootloader, see the :ref:`nrf_desktop_bootloader` section.
 
@@ -61,6 +61,16 @@ The :kconfig:option:`CONFIG_MCUBOOT_BOOTLOADER_MODE_DIRECT_XIP` Kconfig option i
 If the option is enabled, the DFU module reports the ``MCUBOOT+XIP`` bootloader name instead of ``MCUBOOT`` to indicate that the bootloader working in the direct-xip mode is used.
 See the :ref:`nrf_desktop_bootloader` section for more information on the MCUboot bootloader configuration.
 
+Partitioning methods
+====================
+
+The DFU module stores the update image received over the configuration channel to a dedicated memory partition.
+Due to this responsibility, it uses one of the supported partitioning methods to get the information about this partition location.
+
+The DFU module is compatible with the memory layout defined using the Partition Manager (PM).
+It is also compatible with the memory layout defined using the Devicetree Source (DTS) when you use it with the MCUboot bootloader.
+For more details about the memory layout methods, see the :ref:`nrf_desktop_memory_layout` documentation.
+
 Device identification information
 =================================
 
@@ -134,16 +144,6 @@ fwinfo
    * Version and length of the image.
    * Partition ID of the currently booted image, used to specify the image placement.
 
-   Additionally, for the nRF54H Series, the following applies:
-
-   * The reported image size is set to zero.
-   * The booted image version is indicated by:
-
-     * Root manifest sequence number that is encoded in the build number field.
-     * Manifest semantic version, if supported by the SDFW (requires v0.6.2 or higher).
-       The semantic version is encoded in the major, minor and patch fields.
-       If semantic versioning is not supported, these fields are set to zero.
-
 .. _dfu_devinfo:
 
 devinfo

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

@@ -368,6 +368,9 @@ nRF5340 Audio
 nRF Desktop
 -----------
 
+  * Added support for the DTS-based memory layout in the :ref:`nrf_desktop_dfu`.
+    This layout is only supported for the MCUboot bootloader.
+
   * Updated:
 
     * The memory layouts for the ``nrf54lm20dk/nrf54lm20a/cpuapp`` board target to make more space for the application code.
@@ -414,9 +417,9 @@ nRF Desktop
     * The :ref:`nrf_desktop_hid_forward` to allow using the module when configuration channel support (:ref:`CONFIG_DESKTOP_CONFIG_CHANNEL_ENABLE <config_desktop_app_options>`) is disabled in the application configuration.
     * The :ref:`nrf_desktop_keys_state` to rely on runtime assertions, ensuring that the initialization function is called only once and other APIs of the utility are called after the utility was initialized.
       This is done to align the utility with other application utilities.
-    * The :ref:`nrf_desktop_dfu_mcumgr` to handle the ``nrf54h20dk/nrf54h20/cpuapp`` board target with the IronSide SE architecture and the MCUboot bootloader.
+    * The :ref:`nrf_desktop_dfu` and the :ref:`nrf_desktop_dfu_mcumgr` to handle the ``nrf54h20dk/nrf54h20/cpuapp`` board target with the IronSide SE architecture and the MCUboot bootloader.
 
-  * Removed the SUIT support from the :ref:`nrf_desktop_dfu_mcumgr`.
+  * Removed the SUIT support from the :ref:`nrf_desktop_dfu` and the :ref:`nrf_desktop_dfu_mcumgr`.
 
 nRF Machine Learning (Edge Impulse)
 -----------------------------------