tree 31fa395b798aa8e2d0f4cf9f5d4b8f116ad21dd1
parent 17425275112960af0dc9882c06c343d3b6ec8dc9
author Jonas Bonn <jonas@southpole.se> 1321623604 +0100
committer Jonas Bonn <jonas@southpole.se> 1329469699 +0100

openrisc: Set shortest clock event to 100 ticks

It takes a couple of instructions to actually configure a clock event
so setting an alarm just 1 clock cycle in the future isn't going to work;
doing so results in setting an alarm in the "past" in which case the event
won't fire until the timer overflows and rolls back around to the "current
time".

Not quite sure how many clock cycles it actually takes to get through to
actually writing the register, but 100 seems to work reliably.

Use generic helper to set up the clock event while we're at it.

Reported-by: Jan Schulte <jan.schulte@aacmicrotec.com>
Signed-off-by: Jonas Bonn <jonas@southpole.se>