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| author | Perry Yuan <Perry.Yuan@amd.com> | 2022-08-15 00:35:47 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-08-31 21:05:38 +0200 |
| commit | ca08e46d4215e85eb3cef2481255431d98da56da (patch) | |
| tree | f2bc31d92a8c08491df0720b76a4ea5b03318b91 /drivers/cpufreq | |
| parent | 0e9a86386bca646d3b0fc50e5e15eedb1eb620b3 (diff) | |
| download | linux-ca08e46d4215e85eb3cef2481255431d98da56da.tar.gz | |
cpufreq: amd-pstate: update pstate frequency transition delay time
Change the default transition latency to be 20ms that is more reasonable transition delay for AMD processors in non-EPP driver mode. Update transition delay time to 1ms, in the AMD CPU autonomous mode and non-autonomous mode, CPPC firmware will decide frequency at 1ms timescale based on the workload utilization. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Perry Yuan <Perry.Yuan@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index fd563a002fd0..33fbd6a94c43 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -46,8 +46,8 @@ #include <asm/cpu_device_id.h> #include "amd-pstate-trace.h" -#define AMD_PSTATE_TRANSITION_LATENCY 0x20000 -#define AMD_PSTATE_TRANSITION_DELAY 500 +#define AMD_PSTATE_TRANSITION_LATENCY 20000 +#define AMD_PSTATE_TRANSITION_DELAY 1000 /* * TODO: We need more time to fine tune processors with shared memory solution |