From: Pierre Gondois <[email protected]>
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 <[email protected]>
---
drivers/cpufreq/cppc_cpufreq.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 000a0c610c30..ad1535fbf389 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -558,6 +558,7 @@ 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
--
2.25.1
On 11-05-22, 15:45, Pierre Gondois wrote:
> From: Pierre Gondois <[email protected]>
>
> 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 <[email protected]>
> ---
> drivers/cpufreq/cppc_cpufreq.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
> index 000a0c610c30..ad1535fbf389 100644
> --- a/drivers/cpufreq/cppc_cpufreq.c
> +++ b/drivers/cpufreq/cppc_cpufreq.c
> @@ -558,6 +558,7 @@ 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
Acked-by: Viresh Kumar <[email protected]>
--
viresh