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Re: [loongson-dev] Re: a pre-release of merging loongson patchs to linux

Subject: Re: [loongson-dev] Re: a pre-release of merging loongson patchs to linux-
From: Erwan Lerale <>
Date: Tue, 19 May 2009 14:14:01 +0200
Cc:,,,,,,, Ralf Baechle <>
In-reply-to: <>
Original-recipient: rfc822;
References: <1240501332.28136.24.camel@falcon> <> <1240535343.25824.14.camel@falcon> <> <1240556617.23345.10.camel@falcon> <> <1240640248.25540.27.camel@falcon> <>
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Erwan Lerale a écrit :

Now, let's talk about the cpufreq stuff :)

cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to, please.
analyzing CPU 0:
 driver: loongson2f
 CPUs which need to switch frequency at the same time: 0
 hardware limits: 199 MHz - 797 MHz
available frequency steps: 199 MHz, 299 MHz, 398 MHz, 498 MHz, 598 MHz, 697 MHz, 797 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance
 current policy: frequency should be within 199 MHz and 797 MHz.
                 The governor "ondemand" may decide which speed to use
                 within this range.
 current CPU frequency is 797 MHz (asserted by call to hardware).
cpufreq stats: 199 MHz:0.00%, 299 MHz:0.00%, 398 MHz:0.00%, 498 MHz:0.00%, 598 MHz:0.00%, 697 MHz:0.00%, 797 MHz:100.00%

It seems to be working but it's weird. When I start X and gnome (cpufreq applet). I can see that's the system is using the ondemand performance but is stuck at 797 Mhz if I don't do anything. If i start working (yeah it's happening sometimes), the frequency is moving from 199Mhz to 797Mhz.

The other thing which is weird is that I don't have this problem with the Loonux stock kernel.


I've switched from the ondemand governor to the conservative one and it seems
to be working properly.

I have also noticed that the fans seems to be running at full speed all the time.
Any comment, on this issue ?

Is there a way to query the sensors ?


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