diff --git a/MdePkg/Include/IndustryStandard/Acpi30.h b/MdePkg/Include/IndustryStandard/Acpi30.h
index 29f0d55355..cb50b1d8f7 100644
--- a/MdePkg/Include/IndustryStandard/Acpi30.h
+++ b/MdePkg/Include/IndustryStandard/Acpi30.h
@@ -17,6 +17,20 @@
 
 #define ACPI_EXTENDED_ADDRESS_SPACE_DESCRIPTOR  0x8B
 
+///
+/// C-state Coordination Types
+/// See s8.4.2.2 _CSD (C-State Dependency)
+///
+#define ACPI_AML_COORD_TYPE_SW_ALL  0xFC
+#define ACPI_AML_COORD_TYPE_SW_ANY  0xFD
+#define ACPI_AML_COORD_TYPE_HW_ALL  0xFE
+
+///
+/// _PSD Revision for ACPI 3.0
+// See s8.4.4.5 _PSD (P-State Dependency)
+///
+#define EFI_ACPI_3_0_AML_PSD_REVISION  0
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi40.h b/MdePkg/Include/IndustryStandard/Acpi40.h
index a2da09346f..0e30f4f841 100644
--- a/MdePkg/Include/IndustryStandard/Acpi40.h
+++ b/MdePkg/Include/IndustryStandard/Acpi40.h
@@ -10,6 +10,11 @@
 
 #include <IndustryStandard/Acpi30.h>
 
+///
+/// _PSD Revision for ACPI 4.0
+///
+#define EFI_ACPI_4_0_AML_PSD_REVISION  0
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi50.h b/MdePkg/Include/IndustryStandard/Acpi50.h
index 76706aa640..a00b8259b8 100644
--- a/MdePkg/Include/IndustryStandard/Acpi50.h
+++ b/MdePkg/Include/IndustryStandard/Acpi50.h
@@ -23,6 +23,16 @@
 #define ACPI_GPIO_CONNECTION_DESCRIPTOR                0x8C
 #define ACPI_GENERIC_SERIAL_BUS_CONNECTION_DESCRIPTOR  0x8E
 
+///
+/// _PSD Revision for ACPI 5.0
+///
+#define EFI_ACPI_5_0_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 5.0
+///
+#define EFI_ACPI_5_0_AML_CPC_REVISION  1
+
 #pragma pack(1)
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi51.h b/MdePkg/Include/IndustryStandard/Acpi51.h
index 01ef544c3a..4241b8f198 100644
--- a/MdePkg/Include/IndustryStandard/Acpi51.h
+++ b/MdePkg/Include/IndustryStandard/Acpi51.h
@@ -13,6 +13,16 @@
 
 #include <IndustryStandard/Acpi50.h>
 
+///
+/// _PSD Revision for ACPI 5.1
+///
+#define EFI_ACPI_5_1_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 5.1
+///
+#define EFI_ACPI_5_1_AML_CPC_REVISION  2
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi60.h b/MdePkg/Include/IndustryStandard/Acpi60.h
index 5ac3be6ad7..3757d3f827 100644
--- a/MdePkg/Include/IndustryStandard/Acpi60.h
+++ b/MdePkg/Include/IndustryStandard/Acpi60.h
@@ -12,6 +12,16 @@
 
 #include <IndustryStandard/Acpi51.h>
 
+///
+/// _PSD Revision for ACPI 6.0
+///
+#define EFI_ACPI_6_0_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.0
+///
+#define EFI_ACPI_6_0_AML_CPC_REVISION  2
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi61.h b/MdePkg/Include/IndustryStandard/Acpi61.h
index 7af67d832b..c3facc6e37 100644
--- a/MdePkg/Include/IndustryStandard/Acpi61.h
+++ b/MdePkg/Include/IndustryStandard/Acpi61.h
@@ -12,6 +12,16 @@
 
 #include <IndustryStandard/Acpi60.h>
 
+///
+/// _PSD Revision for ACPI 6.1
+///
+#define EFI_ACPI_6_1_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.1
+///
+#define EFI_ACPI_6_1_AML_CPC_REVISION  2
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi62.h b/MdePkg/Include/IndustryStandard/Acpi62.h
index e27775a85a..4dd3e21c23 100644
--- a/MdePkg/Include/IndustryStandard/Acpi62.h
+++ b/MdePkg/Include/IndustryStandard/Acpi62.h
@@ -29,6 +29,16 @@
 #define ACPI_PIN_GROUP_FUNCTION_DESCRIPTOR       0x91
 #define ACPI_PIN_GROUP_CONFIGURATION_DESCRIPTOR  0x92
 
+///
+/// _PSD Revision for ACPI 6.2
+///
+#define EFI_ACPI_6_2_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.2
+///
+#define EFI_ACPI_6_2_AML_CPC_REVISION  3
+
 #pragma pack(1)
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi63.h b/MdePkg/Include/IndustryStandard/Acpi63.h
index 10bdf5fe5a..7582dccf64 100644
--- a/MdePkg/Include/IndustryStandard/Acpi63.h
+++ b/MdePkg/Include/IndustryStandard/Acpi63.h
@@ -12,6 +12,16 @@
 
 #include <IndustryStandard/Acpi62.h>
 
+///
+/// _PSD Revision for ACPI 6.3
+///
+#define EFI_ACPI_6_3_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.3
+///
+#define EFI_ACPI_6_3_AML_CPC_REVISION  3
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi64.h b/MdePkg/Include/IndustryStandard/Acpi64.h
index 575ca0430c..faf069a045 100644
--- a/MdePkg/Include/IndustryStandard/Acpi64.h
+++ b/MdePkg/Include/IndustryStandard/Acpi64.h
@@ -12,6 +12,16 @@
 
 #include <IndustryStandard/Acpi63.h>
 
+///
+/// _PSD Revision for ACPI 6.4
+///
+#define EFI_ACPI_6_4_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.4
+///
+#define EFI_ACPI_6_4_AML_CPC_REVISION  3
+
 //
 // Ensure proper structure formats
 //
diff --git a/MdePkg/Include/IndustryStandard/Acpi65.h b/MdePkg/Include/IndustryStandard/Acpi65.h
index d79d0b2b5f..b9616a3e29 100644
--- a/MdePkg/Include/IndustryStandard/Acpi65.h
+++ b/MdePkg/Include/IndustryStandard/Acpi65.h
@@ -18,6 +18,16 @@
 //
 #pragma pack(1)
 
+///
+/// _PSD Revision for ACPI 6.5
+///
+#define EFI_ACPI_6_5_AML_PSD_REVISION  0
+
+///
+/// _CPC Revision for ACPI 6.5
+///
+#define EFI_ACPI_6_5_AML_CPC_REVISION  3
+
 ///
 /// ACPI 6.5 Generic Address Space definition
 ///