Hajimu UMEMOTO wrote: > Hi, > >>>>>> On Tue, 31 Jul 2007 12:44:06 +0200 >>>>>> Pietro Cerutti <[EMAIL PROTECTED]> said: > > gahr> Nevermind, I finally got my passive cooling working. > > Congratulation!
Thanx ;-) > > gahr> I don't know if the values of _TC1, _TC2 and TSP are meaningful, but it > gahr> seems to work for me, having a _PSV value of 65C. > gahr> Any suggestions on those values are welcome. > > The cpufreq is controlled according to the following formula: > > P [%] = _TC1 * ( Tn - Tn-1 ) + _TC2 * ( Tn - _PSV ) > Pn = Pn-1 + HW[ - P ] where 0% <= Pn <= 100% Been there, done that ;-) I saw this formula on the ACPI specs, but I feel like I don't have the knowledge to tailor _TC1 and _TC2 to my > > And, this evaluation is examined every _TSP / 10 second. > I'm not sure which values are appropriate for your box, but my laptop > has the following values: > > Name (_TC1, Zero) > Name (_TC2, 0x0C) > Name (_TSP, 0x28) > > The values are same as you chose. ;-) I took the first two values I found in an ACPI asl on the net. > Please refer the following document for detail: > > http://www.acpi.info/DOWNLOADS/ACPIspec-2-0c.pdf Maybe during vacation :-) > > Sincerely, Thanks for your help! > > -- > Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan > [EMAIL PROTECTED] [EMAIL PROTECTED],jp.}FreeBSD.org > http://www.imasy.org/~ume/ -- Pietro Cerutti PGP Public Key: http://gahr.ch/pgp
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