diff --git a/drivers/usb/device/usb_dc_sam_usbhs.c b/drivers/usb/device/usb_dc_sam_usbhs.c
index 45e43e93c78..55e5377341a 100644
--- a/drivers/usb/device/usb_dc_sam_usbhs.c
+++ b/drivers/usb/device/usb_dc_sam_usbhs.c
@@ -46,11 +46,8 @@ LOG_MODULE_REGISTER(usb_dc_sam_usbhs);
 #endif
 
 #define NUM_OF_EP_MAX		DT_INST_PROP(0, num_bidir_endpoints)
-#if DT_INST_NODE_HAS_PROP(0, maximum_speed)
-#define USB_MAXIMUM_SPEED	DT_INST_ENUM_IDX(0, maximum_speed)
-#else
-#define USB_MAXIMUM_SPEED	2 /* Default to high-speed */
-#endif
+#define USB_MAXIMUM_SPEED	DT_INST_ENUM_IDX_OR(0, maximum_speed, 1)
+BUILD_ASSERT(USB_MAXIMUM_SPEED, "low-speed is not supported");
 
 struct usb_device_ep_data {
 	uint16_t mps;
@@ -312,18 +309,12 @@ int usb_dc_attach(void)
 
 	/* Select the speed */
 	regval = USBHS_DEVCTRL_DETACH;
-#if USB_MAXIMUM_SPEED == 0
-	/* low-speed */
-	regval |= USBHS_DEVCTRL_LS;
-	regval |= USBHS_DEVCTRL_SPDCONF_LOW_POWER;
-#elif USB_MAXIMUM_SPEED == 1
-	/* full-speed */
-	regval |= USBHS_DEVCTRL_SPDCONF_LOW_POWER;
-#elif USB_MAXIMUM_SPEED == 2
+#if (USB_MAXIMUM_SPEED == 2) && IS_ENABLED(CONFIG_USB_DC_HAS_HS_SUPPORT)
 	/* high-speed */
 	regval |= USBHS_DEVCTRL_SPDCONF_NORMAL;
 #else
-#error "Unsupported maximum speed defined in device tree."
+	/* full-speed */
+	regval |= USBHS_DEVCTRL_SPDCONF_LOW_POWER;
 #endif
 	USBHS->USBHS_DEVCTRL = regval;