Reviewed-by: Heng Luo <heng....@intel.com> > -----Original Message----- > From: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com> > Sent: Tuesday, June 7, 2022 6:51 AM > To: devel@edk2.groups.io > Cc: Chaganty, Rangasai V <rangasai.v.chaga...@intel.com>; Sinha, Ankit > <ankit.si...@intel.com>; Kubacki, Michael <michael.kuba...@microsoft.com>; > Luo, Heng <heng....@intel.com> > Subject: [edk2-platforms] [PATCH V1 4/4] TigerlakeOpenBoardPkg: Indicate > width of CLK duty cycle in FADT > > Set the location of the DUTY_CYCLE field in the P_CNT register and indicate > the > width of the clock duty cycle to OS power management > > Cc: Sai Chaganty <rangasai.v.chaga...@intel.com> > Cc: Ankit Sinha <ankit.si...@intel.com> > Cc: Michael Kubacki <michael.kuba...@microsoft.com> > Cc: Heng Luo <heng....@intel.com> > Signed-off-by: Nate DeSimone <nathaniel.l.desim...@intel.com> > --- > .../TigerlakeURvp/OpenBoardPkgPcd.dsc | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git > a/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkgPcd.dsc > b/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkgPcd.dsc > index ebbbc7b9f9..aba3c8d6d0 100644 > --- > a/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkgPcd.dsc > +++ > b/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkgPcd > +++ .dsc > @@ -1,7 +1,7 @@ > ## @file > # PCD configuration build description file for the TigerlakeURvp board. > # > -# Copyright (c) 2021, Intel Corporation. All rights reserved.<BR> > +# Copyright (c) 2021 - 2022, Intel Corporation. All rights > +reserved.<BR> > # SPDX-License-Identifier: BSD-2-Clause-Patent # ## @@ -118,6 +118,14 @@ > gMinPlatformPkgTokenSpaceGuid.PcdPciExpressRegionLength|0x10000000 > #!endif > gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeiStackSize|0x40000 > + > + # > + # Set the location of the DUTY_CYCLE field in the P_CNT register # > + and indicate the width of the clock duty cycle to OS power management > + # > + gMinPlatformPkgTokenSpaceGuid.PcdFadtDutyOffset|0x1 > + gMinPlatformPkgTokenSpaceGuid.PcdFadtDutyWidth|0x3 > + > [PcdsFeatureFlag.common] > ###################################### > # Edk2 Configuration > -- > 2.27.0.windows.1
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