Hi everyone,

We are currently working on an ultra–low-power device based on the STM32U585. When the SoC enters Stop 2 mode, we observe a periodic wake-up every x seconds triggered by &stm32_lp_tick_source, as described in the sample power_mgmt/blinky
.

We would like to know if it is possible to completely disable the low-power timer source in order to minimize power consumption and wake up the system only via external interrupts. In our application, this periodic wake-up increases overall consumption.

In zephyr/drivers/timer/Kconfig
, the SYSTEM_CLOCK_SLOPPY_IDLE option appears relevant. However, when we enable it, the application can no longer wake up properly.

Are there additional configurations or changes required to achieve this behavior?