Clocksource/clockevent with non self-reloading timer blocks?

Hi all,

The SoC I work on (Moschip MCS8140) has several timer blocks, but none of them 
are self-reloading timers, yet I can enable/disable the free-running timer, 
and enable/disable the interrupt generation.

Are there any existing in kernel clocksource/clockevent drivers with the same 
constraints?

Thank you very much for your answer.
-- 
Florian