Currently cpufreq ondemand governor cannot used on older G5 models,
because the transition latency is set to CPUFREQ_ETERNAL. Provide a
value based on a measurement on Xserve G5, which happens to be also the
highest allowed latency.
Signed-off-by: Aaro Koskinen <aaro.koski...@iki.fi>
---
drivers/cpufreq/pmac64-cpufreq.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c
index 674807d..d3d1995 100644
--- a/drivers/cpufreq/pmac64-cpufreq.c
+++ b/drivers/cpufreq/pmac64-cpufreq.c
@@ -674,8 +674,10 @@ static int __init g5_pm72_cpufreq_init(struct device_node
*cpus)
g5_cpu_freqs[0].frequency = max_freq;
g5_cpu_freqs[1].frequency = min_freq;
+ /* Based on a measurement on Xserve G5, rounded up. */
+ transition_latency = 10 * NSEC_PER_MSEC;
+
/* Set callbacks */
- transition_latency = CPUFREQ_ETERNAL;
g5_switch_volt = g5_pfunc_switch_volt;
g5_switch_freq = g5_pfunc_switch_freq;
g5_query_freq = g5_pfunc_query_freq;
--
1.8.3.2
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
