diff options
| author | Michał Żygowski <michal.zygowski@3mdeb.com> | 2019-02-04 15:22:01 +0100 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-02-11 11:40:10 +0000 |
| commit | 7bfdf5be6397713f776f0a98c2ebcd9340632195 (patch) | |
| tree | a59e3d398d4c852cf06f288965310a8a417d9b35 /src | |
| parent | 8a41f4b71e883ec66be511cb592ee19dfa6708c5 (diff) | |
src/mainboard/pcengines/apu2/OemCustomize.c: Enable CPB feature
Enable Core Performance Boost feature in automatic mode.
Also enable C6 state which is a dependency for proper CPB operation.
CPB allows to raise single core frequency from 1000MHz to 1400MHz
during high load if other cores idle. The processor has additional
boosted P-states when CPB is enabled, but these are hidden from OS.
TEST: Higher single-core CPU performance is indicated by increased
memory bandwidth as reported by memtest86+.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I5e080bfaee06fd13cedf5151d4a598ec212213f2
Reviewed-on: https://review.coreboot.org/c/31229
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/pcengines/apu2/OemCustomize.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/pcengines/apu2/OemCustomize.c b/src/mainboard/pcengines/apu2/OemCustomize.c index a729860616..700f4c7ca6 100644 --- a/src/mainboard/pcengines/apu2/OemCustomize.c +++ b/src/mainboard/pcengines/apu2/OemCustomize.c @@ -97,4 +97,6 @@ OemCustomizeInitEarly ( ) { InitEarly->GnbConfig.PcieComplexList = &PcieComplex; + InitEarly->PlatformConfig.CStateMode = CStateModeC6; + InitEarly->PlatformConfig.CpbMode = CpbModeAuto; } |