diff --git a/drivers/acpi/acpica/dbdisply.c b/drivers/acpi/acpica/dbdisply.c
index f2df416d0d2d..d41eb9e67500 100644
--- a/drivers/acpi/acpica/dbdisply.c
+++ b/drivers/acpi/acpica/dbdisply.c
@@ -51,6 +51,8 @@ static acpi_adr_space_type acpi_gbl_space_id_list[] = {
 	ACPI_ADR_SPACE_IPMI,
 	ACPI_ADR_SPACE_GPIO,
 	ACPI_ADR_SPACE_GSBUS,
+	ACPI_ADR_SPACE_PLATFORM_COMM,
+	ACPI_ADR_SPACE_PLATFORM_RT,
 	ACPI_ADR_SPACE_DATA_TABLE,
 	ACPI_ADR_SPACE_FIXED_HARDWARE
 };
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index 177ab88d95de..ed9aedf604a1 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -78,7 +78,8 @@ const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 	"IPMI",			/* 0x07 */
 	"GeneralPurposeIo",	/* 0x08 */
 	"GenericSerialBus",	/* 0x09 */
-	"PCC"			/* 0x0A */
+	"PCC",			/* 0x0A */
+	"PlatformRtMechanism"	/* 0x0B */
 };
 
 const char *acpi_ut_get_region_name(u8 space_id)
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 4defed58ea33..aa236b9e6f24 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -815,8 +815,9 @@ typedef u8 acpi_adr_space_type;
 #define ACPI_ADR_SPACE_GPIO             (acpi_adr_space_type) 8
 #define ACPI_ADR_SPACE_GSBUS            (acpi_adr_space_type) 9
 #define ACPI_ADR_SPACE_PLATFORM_COMM    (acpi_adr_space_type) 10
+#define ACPI_ADR_SPACE_PLATFORM_RT      (acpi_adr_space_type) 11
 
-#define ACPI_NUM_PREDEFINED_REGIONS     11
+#define ACPI_NUM_PREDEFINED_REGIONS     12
 
 /*
  * Special Address Spaces