2 files changed, 9 insertions, 1 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.c b/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.c
index 62195e7..592a571 100644
--- a/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.c
+++ b/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.c
@@ -9,6 +9,10 @@ these two conditions are true:
 1) Framework module is present that consumes PCI CFG  AND
 2) PI module is present that produces PCI CFG2 but not PCI CFG
 
+The Usage of this module is rare since EDK II module IntelFrameworkModulePkg\Universal\PcatSingleSegmentPciCfgPei\PcatSingleSegmentPciCfgPei.inf
+that produce PCI CFG2 can also produce PCI CFG by setting Pcd Feature Flag gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable
+to FALSE.
+
 
 Copyright (c) 2006 - 2008 Intel Corporation. <BR>
 All rights reserved. This program and the accompanying materials
diff --git a/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.inf b/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.inf
index e1fbae3..4b5d09c 100644
--- a/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.inf
+++ b/EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.inf
@@ -8,7 +8,11 @@
 # these two conditions are true:
 # 1) Framework module is present that consumes PCI CFG  AND
 # 2) R9 module is present that produces PCI CFG2 but not PCI CFG
-
+#
+# The Usage of this module is rare since EDK II module IntelFrameworkModulePkg\Universal\PcatSingleSegmentPciCfgPei\PcatSingleSegmentPciCfgPei.inf
+# that produce PCI CFG2 can also produce PCI CFG by setting Pcd Feature Flag gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable
+# to FALSE.
+#
 #
 # PEIM to provide the Variable functionality.
 # Copyright (c) 2006 - 2007, Intel Corporation