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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Reviewed-by: Chasel Chiu Thanks, Chasel > -----Original Message----- > From: Desimone, Nathaniel L > Sent: Tuesday, June 7, 2022 7:17 AM > To: devel@edk2.groups.io > Cc: Chiu, Chasel ; Kubacki, Michael > ; Chaganty, Rangasai V > ; Kethi Reddy, Deepika > ; Esakkithevar, Kathappan > > Subject: [edk2-platforms] [PATCH V2 3/4] CometlakeOpenBoardPkg: Indicate > width of CLK duty cycle in FADT >=20 > Set the location of the DUTY_CYCLE field in the P_CNT register and indica= te the > width of the clock duty cycle to OS power management >=20 > Cc: Chasel Chiu > Cc: Michael Kubacki > Cc: Rangasai V Chaganty > Cc: Deepika Kethi Reddy > Cc: Kathappan Esakkithevar > Signed-off-by: Nate DeSimone > --- > .../CometlakeURvp/OpenBoardPkgPcd.dsc | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) >=20 > diff --git > a/Platform/Intel/CometlakeOpenBoardPkg/CometlakeURvp/OpenBoardPkgPcd. > dsc > b/Platform/Intel/CometlakeOpenBoardPkg/CometlakeURvp/OpenBoardPkgPcd. > dsc > index 589b002d06..68dd08423b 100644 > --- > a/Platform/Intel/CometlakeOpenBoardPkg/CometlakeURvp/OpenBoardPkgPcd. > dsc > +++ > b/Platform/Intel/CometlakeOpenBoardPkg/CometlakeURvp/OpenBoardPkgPcd > +++ .dsc > @@ -1,7 +1,7 @@ > ## @file > # PCD configuration build description file for the CometlakeURvp board. > # > -# Copyright (c) 2020, Intel Corporation. All rights reserved.
> +# Copyright (c) 2020 - 2022, Intel Corporation. All rights > +reserved.
> # > # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -253,6 +253,13 @@ > gMinPlatformPkgTokenSpaceGuid.PcdMaxCpuCoreCount|8 > gMinPlatformPkgTokenSpaceGuid.PcdMaxCpuThreadCount|2 >=20 > + # > + # 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 > + > # > # The PCDs are used to control the Windows SMM Security Mitigations Ta= ble - > Protection Flags > # > -- > 2.27.0.windows.1