Query: fscpos and fscher fan speed reading

Grant Coady grant_lkml at dodo.com.au
Mon Apr 25 05:37:26 CEST 2005


As part of sorting sysfs naming and documentation I would like 
somebody with either these chips to confirm changing fanX_div 
(fscher) or fanX_ripple (fscpos) has little effect on fan speed 
reading or does the change double/halve fan speed reading?

The datasheet is not clear, but one of these drivers is wrong 
and should be fixed -- which? :)

One driver has fanX_ripple, the other fanX_div...

Ripple is described as pulses (ripples) per revolution of the 
fan, being 2, 4 or 8.


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