2 files changed, 30 insertions, 0 deletions
diff --git a/DynamicTablesPkg/Include/AcpiObjects.h b/DynamicTablesPkg/Include/AcpiObjects.h
index 8981c22954..2bdabb2724 100644
--- a/DynamicTablesPkg/Include/AcpiObjects.h
+++ b/DynamicTablesPkg/Include/AcpiObjects.h
@@ -1,6 +1,7 @@
 /** @file
 
   Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.<BR>
+  Copyright (c) 2022 - 2023, Arm Limited. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
@@ -119,6 +120,25 @@ typedef struct AmlCpcInfo {
   UINT32                                    NominalFrequencyInteger;
 } AML_CPC_INFO;
 
+/** A structure that describes a
+    P-State Dependency (PSD) Info.
+
+  Cf. ACPI 6.5, s8.4.5.5 _PSD (P-State Dependency).
+*/
+typedef struct AmlPsdInfo {
+  /// Revision.
+  UINT8     Revision;
+
+  /// Domain Id.
+  UINT32    Domain;
+
+  /// Coordination type.
+  UINT32    CoordType;
+
+  /// Number of processors belonging to the Domain.
+  UINT32    NumProc;
+} AML_PSD_INFO;
+
 #pragma pack()
 
 #endif //AML_CPC_INFO_H_
diff --git a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
index 453cc3fe83..3748cb7c80 100644
--- a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
+++ b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
@@ -72,6 +72,7 @@ typedef enum ArmObjectID {
   EArmObjPccSubspaceType4Info,                                 ///< 47 - Pcc Subspace Type 4 Info
   EArmObjPccSubspaceType5Info,                                 ///< 48 - Pcc Subspace Type 5 Info
   EArmObjEtInfo,                                               ///< 49 - Embedded Trace Extension/Module Info
+  EArmObjPsdInfo,                                              ///< 50 - P-State Dependency (PSD) Info
   EArmObjMax
 } EARM_OBJECT_ID;
 
@@ -1327,6 +1328,15 @@ typedef struct CmArmEtInfo {
   ARM_ET_TYPE    EtType;
 } CM_ARM_ET_INFO;
 
+/** A structure that describes a
+    P-State Dependency (PSD) Info.
+
+    Cf. ACPI 6.5, s8.4.5.5 _PSD (P-State Dependency).
+
+    ID: EArmObjPsdInfo
+*/
+typedef AML_PSD_INFO CM_ARM_PSD_INFO;
+
 #pragma pack()
 
 #endif // ARM_NAMESPACE_OBJECTS_H_