[edk2-devel] [edk2-platforms] [PATCH V2 2/4] WhiskeylakeOpenBoardPkg: Indicate width of CLK duty cycle in FADT

[Nate DeSimone]

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: Chasel Chiu <chasel.chiu at intel.com>
Cc: Michael Kubacki <michael.kubacki at microsoft.com>
Signed-off-by: Nate DeSimone <nathaniel.l.desimone at intel.com>
---
 .../WhiskeylakeOpenBoardPkg/UpXtreme/OpenBoardPkgPcd.dsc | 9 ++++++++-
 .../WhiskeylakeURvp/OpenBoardPkgPcd.dsc                  | 9 ++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/Platform/Intel/WhiskeylakeOpenBoardPkg/UpXtreme/OpenBoardPkgPcd.dsc b/Platform/Intel/WhiskeylakeOpenBoardPkg/UpXtreme/OpenBoardPkgPcd.dsc
index 84d4ec1331..8f3cc6ba28 100644
--- a/Platform/Intel/WhiskeylakeOpenBoardPkg/UpXtreme/OpenBoardPkgPcd.dsc
+++ b/Platform/Intel/WhiskeylakeOpenBoardPkg/UpXtreme/OpenBoardPkgPcd.dsc
@@ -1,7 +1,7 @@
 ## @file
 #  PCD configuration build description file for the UpXtreme board.
 #
-# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2020 - 2022, Intel Corporation. All rights reserved.<BR>
 #
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -259,6 +259,13 @@
   gSiPkgTokenSpaceGuid.PcdSerialIoUartNumber|2
   gSiPkgTokenSpaceGuid.PcdPciExpressRegionLength|gMinPlatformPkgTokenSpaceGuid.PcdPciExpressRegionLength
 
+  #
+  # 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
+
   ######################################
   # Platform Configuration
   ######################################
diff --git a/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc b/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
index 4a7ba4d5f0..4a5d5ef03b 100644
--- a/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
+++ b/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
@@ -1,7 +1,7 @@
 ## @file
 #  PCD configuration build description file for the WhiskeylakeURvp board.
 #
-# Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2019 - 2022, Intel Corporation. All rights reserved.<BR>
 #
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -242,6 +242,13 @@
   ######################################
   gSiPkgTokenSpaceGuid.PcdPciExpressRegionLength|gMinPlatformPkgTokenSpaceGuid.PcdPciExpressRegionLength
 
+  #
+  # 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
+
   ######################################
   # Platform Configuration
   ######################################
-- 
2.27.0.windows.1



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