On 12/10/17 06:58, Qq wrote:
Since the PowerPC architecture has 'Timer/Decrementer Registers', is it
possible for these registers to be used
as a clock tick?
The decrementer is used on some PowerPC BSPs by the clock driver.
However, on systems with a priority based interrupt controller and the
use of nested interrupts this is a bad choice since the decrementer
exception doesn't honour the priority scheme of the interrupt
controller. On these BSPs, a peripheral timer is used.
--
Sebastian Huber, embedded brains GmbH
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