- ARM architected timer
ARM cores may have a per-core architected timer, which provides per-cpu timers.
The timer is attached to a GIC to deliver its per-processor interrupts.
** Timer node properties:
compatible : Should at least contain one of
“arm,armv7-timer”
“arm,armv8-timer”interrupts : Interrupt list for secure, non-secure, virtual and
hypervisor timers, in that order.clock-frequency : The frequency of the main counter, in Hz. Optional.
Example:
timer {
compatible = "arm,cortex-a15-timer",
"arm,armv7-timer";
interrupts = <1 13 0xf08>,
<1 14 0xf08>,
<1 11 0xf08>,
<1 10 0xf08>;
clock-frequency = <100000000>;
};