2 Commits

Author	SHA1	Message	Date
Jonas Bonn	754d5c2bf6	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>	2012-02-17 10:08:19 +01:00
Jonas Bonn	b731fbbd24	OpenRISC: Timekeeping ... Implements support for the OpenRISC timer which is a 28 bit cycle counter that can be read out of a special purpose register. This counter is used as a both a clock event and clocksource device. Signed-off-by: Jonas Bonn <jonas@southpole.se> Cc: tglx@linutronix.de Reviewed-by: Arnd Bergmann <arnd@arndb.de>	2011-07-22 18:46:32 +02:00