Sounds like an interesting project. Probably the reason why there isn't such a driver is because there hasn't been much interest? The drivers in our package are written by folks who wanted/needed the driver. So, if you want a driver for your needs, you'll have to write it yourself. If you can't, you may need to find somebody with a similar interest who /can/ write the driver and work with them. Lastly, you could try to make someone interested in writing the driver by offering to pay them. ;') I suggest you try to scrape together as much technical detail on how such a driver would work, and adapt a similar existing driver (like the icspll driver) to work for your needs. Another idea is to try to reverse engineer a driver by doing a little hardware hacking to monitor and log what happens on the I2C/SMBus while you noodle with the settings under Windows (I'm not sure exactly how that would work... perhaps rig a parallel port connected to the I2C/SMBus?)... of course, that's assuming that it really is controlled over I2C/SMbus and not by, say, a CPU register. Anyways, if you tackle the driver we'd welcome the addition to the project! Phil Marcin Ka?u?a wrote: >Hello >I searched the net quite a lot to find any information on accessing mainboard >PLL's under linux but couldn't find anything. >For windows there are many programs that can change FSB and other parameters >without the need to reboot the PC, but they are of course closed source. >However I can't find anything about it for linux except your's icspll driver - >can anybody give me any hint where to start looking for it (I'm particularly >interested in nforce2 PLL/ amd 2500+ barton). >I know there are drivers in kernel but only for mobile versions. >Can anybody tell me where's the catch - for MS there are so many progs that >support so many chips and nothing for linux? Are these information not freely >available? too expensive to get? >The reason I'm looking for it is that I wanted to write some kind of >program/daemon that would monitor system load and if it's completely idle - >turn the clocks down to reduce heat production. >Has anybody seen something like this anywhere >Thanks for any help >Martin > > >