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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-10-01 09:21:25 +1000
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-30 17:20:20 -0700
commita9487e48a34d7ad606f40a76080475a522a27cff (patch)
treea4fa93c9088781ae4ece9a5e60e8ecb9b63d960f /arch/ppc
parent69d37960b578be0a69383bd71d06c1fcfb86e8b9 (diff)
[PATCH] pmac: fix cpufreq for old tipb 550Mhz
The old 550Mhz titanium powerbook can switch to a lower frequency (500Mhz). A user has been repeately reporting overtemp conditions on his machine at high speed so this simple patch adds support to PowerMac cpufreq for this machine. The difference in frequency isn't big but seem enough to fix that user's problems. The patch has been around for some time now and doesn't seem to cause any problem, so I suppose it could go in now. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Alain RICHARD <alain.richard@equation.fr> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc')
-rw-r--r--arch/ppc/platforms/pmac_cpufreq.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/ppc/platforms/pmac_cpufreq.c b/arch/ppc/platforms/pmac_cpufreq.c
index c0605244edd..d4bc5f67ec5 100644
--- a/arch/ppc/platforms/pmac_cpufreq.c
+++ b/arch/ppc/platforms/pmac_cpufreq.c
@@ -695,6 +695,13 @@ static int __init pmac_cpufreq_setup(void)
set_speed_proc = pmu_set_cpu_speed;
is_pmu_based = 1;
}
+ /* Else check for TiPb 550 */
+ else if (machine_is_compatible("PowerBook3,3") && cur_freq == 550000) {
+ hi_freq = cur_freq;
+ low_freq = 500000;
+ set_speed_proc = pmu_set_cpu_speed;
+ is_pmu_based = 1;
+ }
/* Else check for TiPb 400 & 500 */
else if (machine_is_compatible("PowerBook3,2")) {
/* We only know about the 400 MHz and the 500Mhz model