RIOT/kconfigs/Kconfig.ztimer_only

# Include this for boards whose timer periph cannot generate a clock frequency
# suitable for xtimer with the available clock sources and dividers.
# This will use ztimer to perform the required frequency conversion.
# By default, xtimer is still used with ztimer as backed, unless
# ztimer_xtimer_compat is used.

config HAVE_ZTIMER_ONLY
    bool
    default y
    select MODULE_ZTIMER if MODULE_XTIMER
    select MODULE_ZTIMER_PERIPH_TIMER if MODULE_XTIMER
    help
        Indicates that the board cannot generate a clock frequency suitable for
        xtimer and requires ztimer for conversion. ztimer is used as backend.