nrf54l15 bus fault on system off

RE: nrf54l15 bus fault on system off

MJJ — Fri, 06 Feb 2026 22:55:06 GMT

System OFF with TF-M, /ns build, works with NCSv3.2.1.

Tested NCSv3.2.1, samples/boards/nordic/system_off, added the following to prj.conf:

CONFIG_BUILD_WITH_TFM=y

CONFIG_TFM_NRF_SYSTEM_OFF_SERVICE=y

compiled for /ns on the nRF54L15 DK.

RE: nrf54l15 bus fault on system off

henry1758f — Mon, 05 Jan 2026 08:46:59 GMT

Hi,

I saw this thread from about a year ago where it was mentioned that System OFF is not supported on nRF54L15 when using TF-M (cpuapp/ns).

Could you please confirm whether this is now supported in the latest nRF Connect SDK versions?
If so, which SDK version introduced the support?

If it is still not supported, is there any recommended workaround for applications that require TF-M (e.g. due to KMU usage) but also need System OFF?

For reference, I am currently using nRF Connect SDK v3.1.0.

Thanks.

RE: nrf54l15 bus fault on system off

Kenneth — Tue, 11 Feb 2025 11:52:46 GMT

Hi,

This is not supported yet. We have an internal planning ticket for adding support for TF-M and system off on nRF54L15, but I do not have a timeline for it. Please use nrf54l15dk/nrf54l15/cpuapp for now.

Br,
Kenneth