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board: add support for nrf54ls05a - #844

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bjorn-tore-taraldsen:nRF54LS05A
Sep 2, 2026
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board: add support for nrf54ls05a#844
eivindj-nordic merged 1 commit into
nrfconnect:mainfrom
bjorn-tore-taraldsen:nRF54LS05A

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@bjorn-tore-taraldsen

@bjorn-tore-taraldsen bjorn-tore-taraldsen commented Aug 20, 2026 •
edited by kszromek-nordic
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Add support for new device nRF54LS05A

test_sdk_dfu: PR-886

@bjorn-tore-taraldsen
bjorn-tore-taraldsen requested review from a team and rghaddab as code owners August 20, 2026 10:43
@bjorn-tore-taraldsen bjorn-tore-taraldsen added the DNM Do not merge label Aug 20, 2026
@github-actions github-actions Bot added changelog-entry-required Update changelog before merge. Remove label if entry is not needed or already added. doc-required PR must not be merged without tech writer approval. labels Aug 20, 2026
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You can find the documentation preview for this PR here.

@github-actions github-actions Bot removed the changelog-entry-required Update changelog before merge. Remove label if entry is not needed or already added. label Aug 20, 2026
eivindj-nordic
eivindj-nordic reviewed Aug 20, 2026
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Comment thread samples/peripherals/pwm/README.rst Outdated
Comment thread doc/nrf-bm/release_notes/release_notes_changelog.rst Outdated
Comment thread doc/nrf-bm/includes/supported_boards_all_non-mcuboot_variants_s145.txt Outdated
@bjorn-tore-taraldsen
bjorn-tore-taraldsen force-pushed the nRF54LS05A branch 4 times, most recently from 59c6024 to 12d6270 Compare August 20, 2026 12:03
@bjorn-tore-taraldsen bjorn-tore-taraldsen changed the title device: add support for nrf54ls05a board: add support for nrf54ls05a Aug 20, 2026
nordicjm
nordicjm reviewed Aug 24, 2026
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Comment thread boards/nordic/bm_nrf54ls05dk/bm_nrf54ls05dk_nrf54ls05a_cpuapp_common.dtsi Outdated
Comment thread samples/boot/mcuboot_recovery_retention/sample.yaml Outdated
Comment on lines +52 to +53
extra_args:
- mcuboot_CONFIG_NRF_OBERON=y

@nordicjm nordicjm Aug 24, 2026

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are we expecting users having to manually set this also? Shouldn't it default to this on this SoC?

@bjorn-tore-taraldsen bjorn-tore-taraldsen Aug 24, 2026

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@ncs-eris what do you think.

@nvlsianpu nvlsianpu Aug 26, 2026

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I should be the default option for this SoC.

@bjorn-tore-taraldsen bjorn-tore-taraldsen Aug 26, 2026

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@nvlsianpu Could this setting then be removed and it will use Oberon as default?

@nvlsianpu nvlsianpu Aug 26, 2026

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No - NCS 3.4.0 doesn't default to NRF_OBERON (patched in coming newer version). Don't know whether there is good place in nrf-bm to make this default selection.

eivindj-nordic
eivindj-nordic reviewed Aug 24, 2026
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Comment thread samples/boot/mcuboot_recovery_retention/sample.yaml Outdated
@bjorn-tore-taraldsen
bjorn-tore-taraldsen force-pushed the nRF54LS05A branch 4 times, most recently from e729ecc to d171b97 Compare August 26, 2026 13:39
@bjorn-tore-taraldsen bjorn-tore-taraldsen removed the DNM Do not merge label Aug 26, 2026
@b-gent

b-gent commented Aug 26, 2026

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The bootloader_keys.rst file has not been updated.
https://ncsbmdoc.z6.web.core.windows.net/ncs-bm/PR-844/nrf-bm/app_dev/dfu/bootloader_keys.html

It mentions nRF54LS05B on 3 different occasions, should it now also mention nRF54LS05A?

b-gent
b-gent requested changes Aug 26, 2026
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Comment thread doc/nrf-bm/release_notes/release_notes_changelog.rst Outdated
Comment thread doc/nrf-bm/includes/supported_boards_all_mcuboot_variants_s115.txt Outdated
Comment thread samples/peripherals/pwm/README.rst Outdated
Comment thread samples/peripherals/pwm/README.rst
nvlsianpu
nvlsianpu approved these changes Aug 28, 2026
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Comment thread doc/nrf-bm/app_dev/dfu/bootloader_keys.rst Outdated
MCUboot in |BMshort| allow a few signatures types.
The ED25519 signature type is recommended as supported for nRF54L Series devices with cryptographic hardware support (CRACEN and KMU).
The ED25519 signature type is available for nRF54LS05B devices as well, but it is supported by software only (``nrf_oberon``).
The ED25519 signature type is available for nRF54LS05BA and nRF54LS05B devices as well, but it is supported by software only (``nrf_oberon``).

@nvlsianpu nvlsianpu Aug 28, 2026

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So, there was a mistake in the sentence:
rephrased:

The ED25519 signature type is available for nRF54LS05BA and nRF54LS05B devices as well, but it is supported by software only (``PSA_crypto`).

And size optimal implementation is:
The ECDSA P256 signature type is recommended for nRF54LS05BA and nRF54LS05B devices as well, it is supported by software only (nrf_oberon).

eivindj-nordic
eivindj-nordic reviewed Sep 1, 2026
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Comment thread boards/nordic/bm_nrf54ls05dk/bm_nrf54ls05dk_nrf54ls05a_cpuapp_s115_softdevice.dts Outdated
@bjorn-tore-taraldsen
board: add support for nrf54ls05a
67e8195 
Add support for new board nRF54LS05 DK/ nrf54LS05a

Signed-off-by: Bjørn Tore Taraldsen <bjorn.tore.taraldsen@nordicsemi.no>
@eivindj-nordic
eivindj-nordic merged commit f388804 into nrfconnect:main Sep 2, 2026
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@nordicjm nordicjm nordicjm approved these changes
@eivindj-nordic eivindj-nordic eivindj-nordic approved these changes

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