diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 68a607961b2f..05b086d4d94a 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -40,6 +40,7 @@
 #define ACPI_SIG_PHAT           "PHAT"	/* Platform Health Assessment Table */
 #define ACPI_SIG_PMTT           "PMTT"	/* Platform Memory Topology Table */
 #define ACPI_SIG_PPTT           "PPTT"	/* Processor Properties Topology Table */
+#define ACPI_SIG_PRMT           "PRMT"	/* Platform Runtime Mechanism Table */
 #define ACPI_SIG_RASF           "RASF"	/* RAS Feature table */
 #define ACPI_SIG_RGRT           "RGRT"	/* Regulatory Graphics Resource Table */
 #define ACPI_SIG_SBST           "SBST"	/* Smart Battery Specification Table */
@@ -1710,6 +1711,43 @@ struct acpi_pptt_id {
 	u16 spin_rev;
 };
 
+/*******************************************************************************
+ *
+ * PRMT - Platform Runtime Mechanism Table
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_prmt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+};
+
+struct acpi_table_prmt_header {
+	u8 platform_guid[16];
+	u32 module_info_offset;
+	u32 module_info_count;
+};
+
+struct acpi_prmt_module_info {
+	u16 revision;
+	u16 length;
+	u8 module_guid[16];
+	u16 major_rev;
+	u16 minor_rev;
+	u16 handler_info_count;
+	u32 handler_info_offset;
+	u64 mmio_list_pointer;
+};
+
+struct acpi_prmt_handler_info {
+	u16 revision;
+	u16 length;
+	u8 handler_guid[16];
+	u64 handler_address;
+	u64 static_data_buffer_address;
+	u64 acpi_param_buffer_address;
+};
+
 /*******************************************************************************
  *
  * RASF - RAS Feature Table (ACPI 5.0)