samples: nfc: system_off: Optimize power consumption for nRF54LM

[dawidprzybylo]

Add board configuration for nRF54LM20DK
Enabling PM_DEVICE and PM_DEVICE_RUNTIME

Ref: KRKNWK-21307

[Copilot]

Pull request overview

This PR optimizes power consumption for the NFC system_off sample on the nRF54LM20DK board by adding board-specific configuration files that enable power management features.

• Adds board overlay enabling runtime power management for UART20
• Enables PM_DEVICE and PM_DEVICE_RUNTIME configuration options

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
samples/nfc/system_off/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay	Configures UART20 with automatic runtime power management
samples/nfc/system_off/boards/nrf54lm20dk_nrf54lm20a_cpuapp.conf	Enables device power management and runtime power management

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[NordicBuilder]

CI Information

^{To view the history of this post, click the 'edited' button above}
Build number: 1

Inputs:

Sources:

sdk-nrf: PR head: e6596e41112cdb9b1cd447fe5827d719b45867df

more details

sdk-nrf:

PR head: e6596e41112cdb9b1cd447fe5827d719b45867df
merge base: d6c88a74779647f151672a83b995215491d0df9a
target head (main): d6c88a74779647f151672a83b995215491d0df9a
Diff

Github labels

Enabled	Name	Description
	ci-disabled	Disable the ci execution
	ci-all-test	Run all of ci, no test spec filtering will be done
	ci-force-downstream	Force execution of downstream even if twister fails
	ci-run-twister	Force run twister
	ci-run-zephyr-twister	Force run zephyr twister

List of changed files detected by CI (2)

samples
│  ├── nfc
│  │  ├── system_off
│  │  │  ├── boards
│  │  │  │  ├── nrf54lm20dk_nrf54lm20a_cpuapp.conf
│  │  │  │  │ nrf54lm20dk_nrf54lm20a_cpuapp.overlay

Outputs:

Toolchain

Version: f911d4f4e7
Build docker image: docker-dtr.nordicsemi.no/sw-production/ncs-build:f911d4f4e7_5ea73affbf

Test Spec & Results: ✅ Success; ❌ Failure; 🟠 Queued; 🟡 Progress; ◻️ Skipped; ⚠️ Quarantine

• ◻️ Toolchain - Skipped: existing toolchain is used
• ✅ Build twister
  • sdk-nrf test count: 7
• ✅ Integration tests
  • ✅ test-fw-nrfconnect-nfc

Disabled integration tests

• • test-fw-nrfconnect-nrf_lrcs_mosh
  • desktop52_verification
  • test_ble_nrf_config
  • test-fw-nrfconnect-ble_mesh
  • test-fw-nrfconnect-ble_samples
  • test-fw-nrfconnect-chip
  • test-fw-nrfconnect-fem
  • test-fw-nrfconnect-nrf-iot_cloud
  • test-fw-nrfconnect-nrf-iot_libmodem-nrf
  • test-fw-nrfconnect-nrf-iot_lwm2m
  • test-fw-nrfconnect-nrf-iot_samples
  • test-fw-nrfconnect-nrf-iot_thingy91
  • test-fw-nrfconnect-nrf-iot_zephyr_lwm2m
  • test-fw-nrfconnect-nrf_crypto
  • test-fw-nrfconnect-ps-main
  • test-fw-nrfconnect-rpc
  • test-fw-nrfconnect-rs
  • test-fw-nrfconnect-tfm
  • test-fw-nrfconnect-thread-main
  • test-low-level
  • test-sdk-audio
  • test-sdk-dfu
  • test-sdk-find-my
  • test-sdk-mcuboot
  • test-sdk-wifi
  • test-secdom-samples-public

Note: This message is automatically posted and updated by the CI

[MarGasiorek]

Thanks