diff --git a/src/mainboard/google/volteer/variants/baseboard/devicetree.cb b/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
index 9f3987e672..3a54d3b728 100644
--- a/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
@@ -489,7 +489,7 @@ chip soc/intel/tigerlake
 			chip soc/intel/common/block/pcie/rtd3
 				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H3)"
 				register "srcclk_pin" = "3"
-				register "is_external" = "1"
+				register "add_acpi_external_facing_port" = "1"
 				device generic 1 on
 					probe DB_SD SD_RTS5261
 				end
diff --git a/src/soc/intel/common/block/pcie/rtd3/chip.h b/src/soc/intel/common/block/pcie/rtd3/chip.h
index 652aafffd7..8b62406558 100644
--- a/src/soc/intel/common/block/pcie/rtd3/chip.h
+++ b/src/soc/intel/common/block/pcie/rtd3/chip.h
@@ -44,7 +44,7 @@ struct soc_intel_common_block_pcie_rtd3_config {
 	 * Add device property indicating the device provides an external PCI port
 	 * for the OS to apply security restrictions.
 	 */
-	bool is_external;
+	bool add_acpi_external_facing_port;
 
 	/*
 	 * Allow a device to add the RuntimeD3Storage property even if the detected
diff --git a/src/soc/intel/common/block/pcie/rtd3/rtd3.c b/src/soc/intel/common/block/pcie/rtd3/rtd3.c
index 7a64734b6e..85ee24fbb5 100644
--- a/src/soc/intel/common/block/pcie/rtd3/rtd3.c
+++ b/src/soc/intel/common/block/pcie/rtd3/rtd3.c
@@ -479,7 +479,7 @@ static void pcie_rtd3_acpi_fill_ssdt(const struct device *dev)
 	acpi_dp_add_package(dsd, pkg);
 
 	/* Indicate to the OS if the device provides an External facing port. */
-	if (config->is_external) {
+	if (config->add_acpi_external_facing_port) {
 		pkg = acpi_dp_new_table(PCIE_EXTERNAL_PORT_UUID);
 		acpi_dp_add_integer(pkg, PCIE_EXTERNAL_PORT_PROPERTY, 1);
 		acpi_dp_add_package(dsd, pkg);