From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Beam Subject: Geode LX support Date: Tue, 23 Jan 2007 10:12:49 -0500 Message-ID: <45B625F1.6000500@comcast.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk Content-Type: text/plain; charset="us-ascii"; format="flowed" To: cpufreq@lists.linux.org.uk Has anyone looked into cpufreq support for the AMD LX800? It provides control over the CPU PLL via MSR 4C000014h, but it has this ominous statement in the datasheet: When using this register to change the PLL frequencies, the CHIP_RESET bit should be set. From viewing the other AMD cpufreq drivers, it appears they do not require a chip reset. This sounds like a bad thing, since I don't have a clue how to save the cpu state, reset, and restore the cpu state. Is this a big deal? Thanks, Paul