powerpc/powermac/cpufreq_32: Set non-infinite transition time for 7447A driver

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / powerpc / platforms / powermac / cpufreq_32.c

diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c
index 6417119..311b804 100644 (file)
--- a/arch/powerpc/platforms/powermac/cpufreq_32.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_32.c
@@ -55,6 +55,7 @@ static unsigned int low_freq;
 static unsigned int hi_freq;
 static unsigned int cur_freq;
 static unsigned int sleep_freq;
+static unsigned long transition_latency;
 
 /*
  * Different models uses different mechanisms to switch the frequency
@@ -403,7 +404,7 @@ static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy)
        if (policy->cpu != 0)
                return -ENODEV;
 
-       policy->cpuinfo.transition_latency      = CPUFREQ_ETERNAL;
+       policy->cpuinfo.transition_latency      = transition_latency;
        policy->cur = cur_freq;
 
        cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu);
@@ -658,12 +659,14 @@ static int __init pmac_cpufreq_setup(void)
        if (!value)
                goto out;
        cur_freq = (*value) / 1000;
+       transition_latency = CPUFREQ_ETERNAL;
 
        /*  Check for 7447A based MacRISC3 */
        if (of_machine_is_compatible("MacRISC3") &&
            of_get_property(cpunode, "dynamic-power-step", NULL) &&
            PVR_VER(mfspr(SPRN_PVR)) == 0x8003) {
                pmac_cpufreq_init_7447A(cpunode);
+               transition_latency = 8000000;
        /* Check for other MacRISC3 machines */
        } else if (of_machine_is_compatible("PowerBook3,4") ||
                   of_machine_is_compatible("PowerBook3,5") ||