diff --git a/src/mainboard/google/myst/variants/baseboard/devicetree.cb b/src/mainboard/google/myst/variants/baseboard/devicetree.cb
index f53f5b760c..01a4389d6f 100644
--- a/src/mainboard/google/myst/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/myst/variants/baseboard/devicetree.cb
@@ -293,6 +293,25 @@ chip soc/amd/phoenix
 					end
 				end
 			end
+			device ref xhci_1 on
+				chip drivers/usb/acpi
+					register "type" = "UPC_TYPE_HUB"
+					device ref xhci_1_root_hub on
+						chip drivers/usb/acpi
+							register "desc" = ""USB3 WWAN""
+							register "type" = "UPC_TYPE_INTERNAL"
+							register "has_power_resource" = "1"
+							register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_6)"
+							register "enable_delay_ms" = "20"
+							register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_11)"
+							register "reset_off_delay_ms" = "20"
+							device ref usb3_port7 on
+								probe WWAN WWAN_FM101GL
+							end
+						end
+					end
+				end
+			end
 			device ref acp on end # Audio Processor (ACP)
 			device ref mp2 on end # Sensor Fusion Hub (MP2)
 		end
diff --git a/src/mainboard/google/myst/variants/baseboard/gpio.c b/src/mainboard/google/myst/variants/baseboard/gpio.c
index 79797638a7..efd654e652 100644
--- a/src/mainboard/google/myst/variants/baseboard/gpio.c
+++ b/src/mainboard/google/myst/variants/baseboard/gpio.c
@@ -28,7 +28,7 @@ static const struct soc_amd_gpio base_gpio_table[] = {
 	/* EN_PP3300_WLAN */
 	PAD_GPO(GPIO_9, HIGH),
 	/* WWAN_RST */
-	PAD_GPO(GPIO_11, LOW),
+	PAD_GPO(GPIO_11, HIGH),
 	/* Unused */
 	PAD_NC(GPIO_12),
 	/* GPIO_13 - GPIO_15: Not available */