Warning about NRF_RTC_TIMER_USER_CHAN_COUNT when building mcuboot

[grzegorz]

I'm trying to build my project for nRF54L15 DK. The project uses mcuboot. When mcuboot is being built, I get following warning:

warning: NRF_RTC_TIMER_USER_CHAN_COUNT (defined at
C:/ncs/v2.9.0/zephyr/soc/nordic\nrf53\Kconfig.sync_rtc:23, drivers/timer/Kconfig.nrf_rtc:20) was
assigned the value '0' but got the value ''. Check these unsatisfied dependencies: ((NRF53_SYNC_RTC
&& SOC_SERIES_NRF53X && SOC_FAMILY_NORDIC_NRF) || (NRF_RTC_TIMER && SYS_CLOCK_EXISTS)) (=n). See
http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_NRF_RTC_TIMER_USER_CHAN_COUNT and/or look
up NRF_RTC_TIMER_USER_CHAN_COUNT in the menuconfig/guiconfig interface. The Application Development
Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual
might be helpful too.

I guess the problem is caused by the config option CONFIG_NRF_RTC_TIMER_USER_CHAN_COUNT=0 located in ncs\v2.9.0\bootloader\mcuboot\boot\zephyr\prj.conf. It looks like this option is included always, also for platforms which don't support it. Maybe it should be removed from mcuboot default conf? The problem is not specific to my project. If you try to build NCS samples which use mcuboot you will get the same warning message, e.g. ncs\v2.9.0\nrf\samples\net\azure_iot_hub

[Einar Thorsrud]

Hi,

Thank you for reporting. You are right, this config cause a warning when building for the nRF54L15, as it does not exist there. For now you can update the file yourself or ignore the warning as it is not relevant on the nRF54L15, but we will address it in a future SDK release.