Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 20 Jul 2005 18:14:52 +0900
From:      Hajimu UMEMOTO <ume@FreeBSD.org>
To:        Jeremie Le Hen <jeremie@le-hen.org>
Cc:        cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/dev/acpica acpi_thermal.c
Message-ID:  <ygeirz5260j.wl%ume@mahoroba.org>
In-Reply-To: <20050720090054.GR39292@obiwan.tataz.chchile.org>
References:  <200507182012.j6IKCNmm078658@repoman.freebsd.org> <20050720090054.GR39292@obiwan.tataz.chchile.org>

next in thread | previous in thread | raw e-mail | index | archive | help
Hi,

>>>>> On Wed, 20 Jul 2005 11:00:54 +0200
>>>>> Jeremie Le Hen <jeremie@le-hen.org> said:

>   Implement passive cooling.  It is enabled for tz0 by default where
>   it is available.

jeremie> I maybe missed a mail someday, but could you explain in a cursory
jeremie> fashion what this does please ? 

It does cooling without fans by decreasing CPU speed when a
temperature bacome higher than hw.acpi.thermal.tz0._PSV.
It is described in ACPI Specification 12.1.5 Passive Cooling:

	http://acpi.info/spec20c.htm

Sincerely,

--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org  ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ygeirz5260j.wl%ume>