3 May
2005
3 May
'05
12:18 p.m.
Hi,
this patch switches the at91rm9200 to asynchronous clocking mode after initialization (it would otherwise stay in FastBus mode which is the _slowest_ clock mode). This lets the core run at full speed when not doing bus accesses, increasing overall performance by a factor of four.
The performance difference between asynchronous ans synchronous clocking mode as measured with nbench 2.2.2 disappears in the statistical noise; since asynchronous clocking mode imposes less restrictions on the clock frequencies it is the mode of choice.
This patch replaces my similar patch from 2005-04-29.
Changelog: * patch by Anders Larsen, 2005-05-03 set the at91rm9200 to asynchronous clocking mode
Cheers Anders