From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 17 Jul 2001 13:32:05 -0400 From: Ethan Blanton To: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.linuxppc.org Subject: Re: Clock drift on an iBook2 Message-ID: <20010717133205.A22391@localhost.localdomain> References: <20010717165032.5490@smtp.adsl.oleane.com> <20010717165231.25195@smtp.adsl.oleane.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="xHFwDpU9dbj6ez1V" In-Reply-To: <20010717165231.25195@smtp.adsl.oleane.com>; from benh@kernel.crashing.org on Tue, Jul 17, 2001 at 06:52:31PM +0200 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: --xHFwDpU9dbj6ez1V Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Benjamin Herrenschmidt spake unto us the following wisdom: > Something else you can try: in arch/ppc/kernel/pmac_time.c, comment > out the call to via_calibrate_decr() (and the return too) so that > we use the device-tree "timebase-frequency" instead, and tell us if > it makes any difference. That seems to have improved it *greatly*. I know have a drift (only sampled after a few minutes, so somewhat inaccurate -- but accurate enough to tell that it's no longer seconds/minute) more on a par with what I have come to expect. Ethan --=20 If I've told you once, I've told you once And once is all that you needed. -- The Refreshments, "Carefree" --xHFwDpU9dbj6ez1V Content-Type: application/pgp-signature Content-Disposition: inline --xHFwDpU9dbj6ez1V-- ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/