nRF Desktop: application module update after the IronSide SE migration #25461

kapi-no · 2025-11-06T13:08:23Z

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NordicBuilder · 2025-11-06T13:12:58Z

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PR head: 357eb2066ecfd7c8419cb84daf66fa732265b7c6
merge base: cc348c5e87b4d87def7a8b28f24f12b47160cd96
target head (main): cc348c5e87b4d87def7a8b28f24f12b47160cd96
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List of changed files detected by CI (3)

applications
│  ├── nrf_desktop
│  │  ├── doc
│  │  │  ├── dfu.rst
│  │  │  │ dfu_mcumgr.rst
doc
│  ├── nrf
│  │  ├── releases_and_maturity
│  │  │  ├── releases
│  │  │  │  │ release-notes-changelog.rst

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Updated the DFU MCUmgr 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 <Kamil.Piszczek@nordicsemi.no>

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 <Kamil.Piszczek@nordicsemi.no>

github-actions · 2025-11-06T13:52:18Z

You can find the documentation preview for this PR here.

Preview links for modified nRF Connect SDK documents:

https://ncsdoc.z6.web.core.windows.net/PR-25461/nrf/releases_and_maturity/releases/release-notes-changelog.html
https://ncsdoc.z6.web.core.windows.net/PR-25461/nrf/applications/nrf_desktop/doc/dfu.html
https://ncsdoc.z6.web.core.windows.net/PR-25461/nrf/applications/nrf_desktop/doc/dfu_mcumgr.html

divipillai · 2025-11-06T15:22:15Z

applications/nrf_desktop/doc/dfu.rst

+The DFU module is compatible with the memory layout defined using the Partition Manager.
+This partitioning method is used by default for most board targets that are based on the nRF52, nRF53, and nRF54 Series SoCs.
+
+Additionally, the DFU module is compatible with the memory layout defined using the Device Tree Source (DTS) when it is used with the MCUboot bootloader.


Suggested change

Additionally, the DFU module is compatible with the memory layout defined using the Device Tree Source (DTS) when it is used with the MCUboot bootloader.

Additionally, the DFU module is compatible with the memory layout defined using the Devicetree Source (DTS) when you use it with the MCUboot bootloader.

Isn't it Devicetree Specification?

https://docs.zephyrproject.org/latest/build/dts/intro-syntax-structure.html

As the name indicates, a devicetree is a tree. The human-readable text format for this tree is called DTS (for devicetree source), and is defined in the Devicetree specification.

divipillai · 2025-11-06T15:23:02Z

applications/nrf_desktop/doc/dfu_mcumgr.rst

 You cannot use this module with the :ref:`caf_ble_smp`.
 In other words, you cannot simultaneously enable the :ref:`CONFIG_DESKTOP_DFU_MCUMGR_ENABLE <config_desktop_app_options>` option and the :kconfig:option:`CONFIG_CAF_BLE_SMP` Kconfig option.

+Currently, this module supports only one bootloader backend: the MCUboot bootloader backend.


Suggested change

Currently, this module supports only one bootloader backend: the MCUboot bootloader backend.

Currently, this module supports only one bootloader backend, the MCUboot bootloader backend.

Consider combining this sentence with the note below to highlight it (this is the same information):

.. note:: Currently, this module supports only one bootloader backend, the MCUboot bootloader backend. B0 bootloader is not integrated with MCUmgr.

divipillai · 2025-11-06T16:41:52Z

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

    * The documentation of the :ref:`nrf_desktop_hid_state` and default HID report providers to simplify getting started with updating HID input reports used by the application or introducing support for a new HID input report.
    * The default value of the :kconfig:option:`CONFIG_SOC_FLASH_NRF_RADIO_SYNC_MPSL_NORMAL_PRIORITY_TIMEOUT_US` Kconfig option to ``0``.
      This is done to start using high MPSL timeslot priority quicker and speed up non-volatile memory operations.
+    * 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.


Should the doc pages be updated with the IronSide SE details?
We have document about IronSide SE here : https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/nrf54h/ug_nrf54h20_ironside.html

divipillai · 2025-11-06T16:44:55Z

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

+    * 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` and the :ref:`nrf_desktop_dfu_mcumgr`.



We have mention about suit in the Board configuration docs here : https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/applications/nrf_desktop/board_configuration.html#nrf_desktop_board_configuration_files. Could remove those line as well? Also, the note about IronSide SE migration at the end of the page.

This will be done in a follow-up PR. This PR focuses only on the application modules from the nRF Desktop app.

divipillai · 2025-11-06T16:57:23Z

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

    * The documentation of the :ref:`nrf_desktop_hid_state` and default HID report providers to simplify getting started with updating HID input reports used by the application or introducing support for a new HID input report.
    * The default value of the :kconfig:option:`CONFIG_SOC_FLASH_NRF_RADIO_SYNC_MPSL_NORMAL_PRIORITY_TIMEOUT_US` Kconfig option to ``0``.
      This is done to start using high MPSL timeslot priority quicker and speed up non-volatile memory operations.
+    * 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.


There was a plan to update the migration guide as well. Will that be done as part of this PR or a separate PR?

Yes, this PR is one of many for the related JIRA ticket. I plan to contribute the nRF Desktop migration guide at the very end

MarekPieta · 2025-11-07T09:34:06Z

applications/nrf_desktop/doc/dfu_mcumgr.rst

 You cannot use this module with the :ref:`caf_ble_smp`.
 In other words, you cannot simultaneously enable the :ref:`CONFIG_DESKTOP_DFU_MCUMGR_ENABLE <config_desktop_app_options>` option and the :kconfig:option:`CONFIG_CAF_BLE_SMP` Kconfig option.

+Currently, this module supports only one bootloader backend: the MCUboot bootloader backend.


Consider combining this sentence with the note below to highlight it (this is the same information):

.. note:: Currently, this module supports only one bootloader backend, the MCUboot bootloader backend. B0 bootloader is not integrated with MCUmgr.

MarekPieta · 2025-11-07T09:36:20Z

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

    * The documentation of the :ref:`nrf_desktop_hid_state` and default HID report providers to simplify getting started with updating HID input reports used by the application or introducing support for a new HID input report.
    * The default value of the :kconfig:option:`CONFIG_SOC_FLASH_NRF_RADIO_SYNC_MPSL_NORMAL_PRIORITY_TIMEOUT_US` Kconfig option to ``0``.
      This is done to start using high MPSL timeslot priority quicker and speed up non-volatile memory operations.
+    * The :ref:`nrf_desktop_dfu_mcumgr` to handle the ``nrf54h20dk/nrf54h20/cpuapp`` board target with the IronSide SE architecture and the MCUboot bootloader.


Maybe we could add one note informing that we added support for the nrf54h20dk/nrf54h20/cpuapp board target with the IronSide SE architecture and the MCUboot bootloader (and SUIT support was removed)? Then we might briefly describe supported features (maybe even as a bullet point sublist)?

We might also add it at the top (to highlight it)

MarekPieta · 2025-11-07T09:43:38Z

applications/nrf_desktop/doc/dfu.rst

+Partitioning methods
+====================
+
+The DFU module is compatible with the memory layout defined using the Partition Manager.


I would suggest to provide a bit more context why partitioning is relevant for this module. I would also suggest to remove some duplication. Maybe we could use something similar to:

The DFU module stores the update image received over the configuration channel to a dedicated memory partition (image slot that is currently not in use). The module is compatible with memory layout defined in either Partition Manager or DTS. Make sure to properly configure the memory layout in configuration. For more details about the memory layout, see the :ref:`nrf_desktop_memory_layout` documentation.

Or maybe we could even skip this section as the information is covered in line 42:

.. important:: The received update image chunks are stored on the dedicated non-volatile memory partition when the current version of the device firmware is running. For this reason, make sure that you use configuration with a dedicated update image partition. For more information on configuring the memory layout in the application, see the :ref:`nrf_desktop_memory_layout` documentation.

You could just add information that The module is compatible with memory layout defined in either Partition Manager or DTS.

kapi-no requested review from a team as code owners November 6, 2025 13:08

NordicBuilder added the doc-required PR must not be merged without tech writer approval. label Nov 6, 2025

NordicBuilder requested a review from a team November 6, 2025 13:08

kapi-no added 2 commits November 6, 2025 14:13

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

357eb20

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 <Kamil.Piszczek@nordicsemi.no>

kapi-no force-pushed the nrf_desktop_ironside_app_module_update branch from 914a872 to 357eb20 Compare November 6, 2025 13:14

divipillai reviewed Nov 6, 2025

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MarekPieta approved these changes Nov 7, 2025

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	Additionally, the DFU module is compatible with the memory layout defined using the Device Tree Source (DTS) when it is used with the MCUboot bootloader.
	Additionally, the DFU module is compatible with the memory layout defined using the Devicetree Source (DTS) when you use it with the MCUboot bootloader.

	Currently, this module supports only one bootloader backend: the MCUboot bootloader backend.
	Currently, this module supports only one bootloader backend, the MCUboot bootloader backend.

		* 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` and the :ref:`nrf_desktop_dfu_mcumgr`.

nRF Desktop: application module update after the IronSide SE migration #25461

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