diff --git a/hw/bsp/samg55xplained/board.mk b/hw/bsp/samg55xplained/board.mk
index 785594505..eff773e04 100644
--- a/hw/bsp/samg55xplained/board.mk
+++ b/hw/bsp/samg55xplained/board.mk
@@ -6,7 +6,7 @@ CFLAGS += \
   -mfloat-abi=hard \
   -mfpu=fpv4-sp-d16 \
   -nostdlib -nostartfiles \
-  -DCFG_TUSB_MCU=OPT_MCU_NONE
+  -DCFG_TUSB_MCU=OPT_MCU_SAMG
 
 #CFLAGS += -Wno-error=undef
 
@@ -35,8 +35,8 @@ INC += \
 	$(TOP)/$(ASF_DIR)/CMSIS/Core/Include
 
 # For TinyUSB port source
-VENDOR = .
-CHIP_FAMILY = template
+VENDOR = microchip
+CHIP_FAMILY = samg
 
 # For freeRTOS port source
 FREERTOS_PORT = ARM_CM4F
diff --git a/hw/bsp/samg55xplained/samg55xplained.c b/hw/bsp/samg55xplained/samg55xplained.c
index b050d3624..79f102504 100644
--- a/hw/bsp/samg55xplained/samg55xplained.c
+++ b/hw/bsp/samg55xplained/samg55xplained.c
@@ -73,6 +73,14 @@ void board_init(void)
 
   // Enble clock
   _pmc_enable_periph_clock(ID_UDP);
+
+	/* USB Device mode & Transceiver active */
+	hri_matrix_write_CCFG_USBMR_reg(MATRIX, CCFG_USBMR_USBMODE);
+
+//	NVIC_EnableIRQ(UDP_IRQn);
+
+  // Attach
+  hri_udp_write_TXVC_reg(UDP, UDP_TXVC_PUON);
 }
 
 //--------------------------------------------------------------------+
diff --git a/src/portable/microchip/samg/dcd_samg.c b/src/portable/microchip/samg/dcd_samg.c
new file mode 100644
index 000000000..793892feb
--- /dev/null
+++ b/src/portable/microchip/samg/dcd_samg.c
@@ -0,0 +1,116 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018, hathach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#if CFG_TUSB_MCU == OPT_MCU_SAMG
+
+#include "device/dcd.h"
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM DECLARATION
+//--------------------------------------------------------------------+
+
+
+/*------------------------------------------------------------------*/
+/* Device API
+ *------------------------------------------------------------------*/
+
+// Initialize controller to device mode
+void dcd_init (uint8_t rhport)
+{
+  (void) rhport;
+}
+
+// Enable device interrupt
+void dcd_int_enable (uint8_t rhport)
+{
+  (void) rhport;
+}
+
+// Disable device interrupt
+void dcd_int_disable (uint8_t rhport)
+{
+  (void) rhport;
+}
+
+// Receive Set Address request, mcu port must also include status IN response
+void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
+{
+  (void) rhport;
+  (void) dev_addr;
+}
+
+// Receive Set Configure request
+void dcd_set_config (uint8_t rhport, uint8_t config_num)
+{
+  (void) rhport;
+  (void) config_num;
+}
+
+// Wake up host
+void dcd_remote_wakeup (uint8_t rhport)
+{
+  (void) rhport;
+}
+
+//--------------------------------------------------------------------+
+// Endpoint API
+//--------------------------------------------------------------------+
+
+// Configure endpoint's registers according to descriptor
+bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
+{
+  (void) rhport;
+  (void) ep_desc;
+  return false;
+}
+
+// Submit a transfer, When complete dcd_event_xfer_complete() is invoked to notify the stack
+bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes)
+{
+  (void) rhport;
+  (void) ep_addr;
+  (void) buffer;
+  (void) total_bytes;
+  return false;
+}
+
+// Stall endpoint
+void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
+{
+  (void) rhport;
+  (void) ep_addr;
+}
+
+// clear stall, data toggle is also reset to DATA0
+void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
+{
+  (void) rhport;
+  (void) ep_addr;
+}
+
+#endif
diff --git a/src/tusb_option.h b/src/tusb_option.h
index 281d44029..6766da074 100644
--- a/src/tusb_option.h
+++ b/src/tusb_option.h
@@ -57,6 +57,7 @@
 // SAM
 #define OPT_MCU_SAMD21            200 ///< MicroChip SAMD21
 #define OPT_MCU_SAMD51            201 ///< MicroChip SAMD51
+#define OPT_MCU_SAMG              202 ///< MicroChip SAMDG series
 
 // STM32
 #define OPT_MCU_STM32F0           300 ///< ST STM32F0