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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>
This commit is contained in:
Michał Żygowski 2019-02-04 15:22:01 +01:00 committed by Kyösti Mälkki
parent 8a41f4b71e
commit 7bfdf5be63
1 changed files with 2 additions and 0 deletions
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src/mainboard/pcengines/apu2/OemCustomize.c
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@ -97,4 +97,6 @@ OemCustomizeInitEarly (
)
{
InitEarly->GnbConfig.PcieComplexList = &PcieComplex;
InitEarly->PlatformConfig.CStateMode = CStateModeC6;
InitEarly->PlatformConfig.CpbMode = CpbModeAuto;
}