cpufreq: CPPC: Enable dvfs_possible_from_any_cpu

The communication mean of the _CPC desired performance can be
PCC, System Memory, System IO, or Functional Fixed Hardware (FFH).

PCC, SystemMemory and SystemIo address spaces are available from any
CPU. Thus, dvfs_possible_from_any_cpu should be enabled in such case.
For FFH, let the FFH implementation do smp_call_function_*() calls.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index bb4118cea2a07accb0e7be89309207d5df4d84ac..d092c9bb4ba39c40e848a2994cd0855c0fc8afb7 100644 (file)
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -743,6 +743,7 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
        }
 
        policy->fast_switch_possible = cppc_allow_fast_switch();
+       policy->dvfs_possible_from_any_cpu = true;
 
        /*
         * If 'highest_perf' is greater than 'nominal_perf', we assume CPU Boost