• Dave Jones's avatar
    [CPUFREQ] Initial Dothan speedstep support. · d56abc8b
    Dave Jones authored
    here's a patch on top of the above patch that adds all of the
    dothan frequency/voltages for processors 715, 725, 735, 745, 755
    
    Tested and working as it should so far with a 745. The stepping in the
    model table for the others may need to be tweaked.
    
    The Dothan processor datasheet 30218903.pdf defines 4 voltages for
    each frequency (VID#A through VID#D) whereas Banias only suggests a
    typical voltage and no min or max for each freq so i've used the OP
    macro to allow definition of all voltages (A through D) but the macro
    currently just uses VID#C at compile time (the second lowest voltage
    profile).
    
    The docs define these 4 profiles but don't say anywhere in which cases
    they should be used. I guess it may be a case of usage of the differing
    profiles based on the tolerance and accuracy of the power supply in use
    for the specific application.
    
    From: Michael Clark
    Signed-off-by: default avatarDave Jones <davej@redhat.com>
    d56abc8b
speedstep-centrino.c 19.6 KB