Hi
I wonder why there is no /proc/cpufreq on my Titanium PowerBook G4 (400 MHz).
I use the plain vanilla kernel.org 2.4.20 kernel compiled with the benh10 and
mh6 patches. I also have no cpufreq related error messages in syslog.
In .config it says:
CONFIG_CPU_FREQ=y
# CONFIG_CPU_FREQ_24_API is not set
CONFIG_CPU_FREQ_26_API=y
CONFIG_CPU_FREQ_PMAC=y
cat /proc/cpuinfo delivers:
cpu : 7410, altivec supported
temperature : 31-33 C (uncalibrated)
clock : 400MHz
revision : 17.3 (pvr 800c 1103)
bogomips : 797.90
machine : PowerBook3,2
motherboard : PowerBook3,2 MacRISC2 MacRISC Power Macintosh
detected as : 71 (PowerBook Titanium)
pmac flags : 0000000b
L2 cache : 1024K unified
memory : 384MB
pmac-generation : NewWorld
In linux-2.4.20/arch/ppc/platforms/pmac_cpufreq.c it says:
/* Currently, we support the following machines:
*
* - Titanium PowerBook 800 (PMU based, 667Mhz & 800Mhz)
* - Titanium PowerBook 500 (PMU based, 300Mhz & 500Mhz)
* - iBook2 500 (PMU based, 400Mhz & 500Mhz)
* - iBook2 700 (CPU based, 400Mhz & 700Mhz, support low voltage)
*/
and:
/* Else check for TiPb 500 */
else if (machine_is_compatible("PowerBook3,2")) {
/* We only know about 500Mhz model */
if (cur_freq < 450000 || cur_freq > 550000)
goto out;
hi_freq = cur_freq;
low_freq = 300000;
has_freq_ctl = 1;
cpufreq_uses_pmu = 1;
}
Is my machine missing some crucial hardware? I have a TiPb 400, don't I?
I currently have some 180 Minutes of run on battery, I do not need full
processing power but rather longer battery life.
Salut
Mark
