[edk2-devel] [edk2-platforms] [PATCH V1 4/4] TigerlakeOpenBoardPkg: Indicate width of CLK duty cycle in FADT
Michael Kubacki
mikuback at linux.microsoft.com
Mon Jun 6 22:59:32 UTC 2022
Reviewed-by: Michael Kubacki <michael.kubacki at microsoft.com>
On 6/6/2022 6:50 PM, Nate DeSimone wrote:
> 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.chaganty at intel.com>
> Cc: Ankit Sinha <ankit.sinha at intel.com>
> Cc: Michael Kubacki <michael.kubacki at microsoft.com>
> Cc: Heng Luo <heng.luo at intel.com>
> Signed-off-by: Nate DeSimone <nathaniel.l.desimone at 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
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