Change memory timings from within Linux?



I've been battling with a K9MM-V mobo all week and have just the one
problem remaining, BIOS sets memory timing incorrectly. Spd eeprom
indicates 5-5-5-15, BIOS sets 5-6-5-15 with no options to change it.
Is there a Linix utility to set memory timing?

Martin.
.