From: Benjamin Herrenschmidt Date: Fri, 30 Sep 2005 23:21:25 +0000 (+1000) Subject: [PATCH] pmac: fix cpufreq for old tipb 550Mhz X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a9487e48a34d7ad606f40a76080475a522a27cff;p=deliverable%2Flinux.git [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 Signed-off-by: Alain RICHARD Signed-off-by: Linus Torvalds --- diff --git a/arch/ppc/platforms/pmac_cpufreq.c b/arch/ppc/platforms/pmac_cpufreq.c index c0605244edda..d4bc5f67ec53 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