diff --git a/tinyusb/portable/nordic/nrf5x/dcd_nrf5x.c b/tinyusb/portable/nordic/nrf5x/dcd_nrf5x.c
index 454db01b..c8e2ec4f 100644
--- a/tinyusb/portable/nordic/nrf5x/dcd_nrf5x.c
+++ b/tinyusb/portable/nordic/nrf5x/dcd_nrf5x.c
@@ -42,7 +42,6 @@
 #include "nrf_usbd.h"
 #include "nrf_clock.h"
 
-#include "nrf_drv_power.h"
 #include "nrf_drv_usbd_errata.h"
 
 #include "device/dcd.h"
@@ -91,146 +90,6 @@ typedef struct
   volatile bool dma_running;
 }_dcd;
 
-/*------------------------------------------------------------------*/
-/* Controller Start up Sequence
- *------------------------------------------------------------------*/
-
-static bool is_sd_enabled(void)
-{
-#ifdef SOFTDEVICE_PRESENT
-  uint8_t sd_en = 0;
-  (void) sd_softdevice_is_enabled(&sd_en);
-
-  return sd_en;
-#else
-  return false;
-#endif
-}
-
-static bool hfclk_running(void)
-{
-#ifdef SOFTDEVICE_PRESENT
-  if ( is_sd_enabled() )
-  {
-    uint32_t is_running;
-    (void) sd_clock_hfclk_is_running(&is_running);
-    return (is_running ? true : false);
-  }
-#endif
-
-  return nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY);
-}
-
-static void hfclk_enable(void)
-{
-  // already running, nothing to do
-  if ( hfclk_running() ) return;
-
-#ifdef SOFTDEVICE_PRESENT
-  if ( is_sd_enabled() )
-  {
-    (void)sd_clock_hfclk_request();
-    return;
-  }
-#endif
-
-  nrf_clock_event_clear(NRF_CLOCK_EVENT_HFCLKSTARTED);
-  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTART);
-}
-
-static void hfclk_disable(void)
-{
-#ifdef SOFTDEVICE_PRESENT
-  if ( is_sd_enabled() )
-  {
-    (void)sd_clock_hfclk_release();
-    return;
-  }
-#endif // SOFTDEVICE_PRESENT
-
-  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
-}
-
-static void power_usb_event_handler(nrf_drv_power_usb_evt_t event)
-{
-  // 51.4 specs USBD start-up sequene
-  switch ( event )
-  {
-    case NRF_DRV_POWER_USB_EVT_DETECTED:
-      if ( !NRF_USBD->ENABLE )
-      {
-        /* Prepare for READY event receiving */
-        nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
-
-        /* Enable the peripheral */
-        nrf_usbd_enable();
-
-        // Enable HFCLK
-        hfclk_enable();
-
-        /* Waiting for peripheral to enable, this should take a few us */
-        while ( !(NRF_USBD_EVENTCAUSE_READY_MASK & NRF_USBD->EVENTCAUSE) ) { }
-        nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
-        nrf_usbd_event_clear(NRF_USBD_EVENT_USBEVENT);
-      }
-    break;
-
-    case NRF_DRV_POWER_USB_EVT_READY:
-      // Wait for HFCLK
-      while ( !hfclk_running() ) {}
-
-      if ( nrf_drv_usbd_errata_166() )
-      {
-        *((volatile uint32_t *) (NRF_USBD_BASE + 0x800)) = 0x7E3;
-        *((volatile uint32_t *) (NRF_USBD_BASE + 0x804)) = 0x40;
-
-        __ISB(); __DSB();
-      }
-
-      nrf_usbd_isosplit_set(NRF_USBD_ISOSPLIT_Half);
-
-      // Enable interrupt. SOF is used as CDC auto flush
-      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_USBEVENT_Msk | USBD_INTEN_ACCESSFAULT_Msk |
-                           USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk |  USBD_INTEN_ENDEPOUT0_Msk |
-                           USBD_INTEN_EPDATA_Msk   | USBD_INTEN_SOF_Msk;
-
-      //  if (enable_sof || nrf_drv_usbd_errata_104())
-      //  {
-      //    ints_to_enable |= NRF_USBD_INT_SOF_MASK;
-      //  }
-
-      // Enable interrupt, Priorities 0,1,4,5 (nRF52) are reserved for SoftDevice
-      NVIC_SetPriority(USBD_IRQn, 7);
-      NVIC_ClearPendingIRQ(USBD_IRQn);
-      NVIC_EnableIRQ(USBD_IRQn);
-
-      // Enable pull up
-      nrf_usbd_pullup_enable();
-    break;
-
-    case NRF_DRV_POWER_USB_EVT_REMOVED:
-      if ( NRF_USBD->ENABLE )
-      {
-        // Abort all transfers
-
-        // Disable pull up
-        nrf_usbd_pullup_disable();
-
-        // Disable Interrupt
-        NVIC_DisableIRQ(USBD_IRQn);
-
-        // disable all interrupt
-        NRF_USBD->INTENCLR = NRF_USBD->INTEN;
-
-        nrf_usbd_disable();
-        hfclk_disable();
-      }
-    break;
-
-    default: break;
-  }
-}
-
 void bus_reset(void)
 {
   for(int i=0; i<8; i++)
@@ -250,12 +109,7 @@ void bus_reset(void)
  *------------------------------------------------------------------*/
 bool dcd_init (uint8_t rhport)
 {
-  // USB Power detection
-  const nrf_drv_power_usbevt_config_t config =
-  {
-      .handler = power_usb_event_handler
-  };
-  return ( NRF_SUCCESS == nrf_drv_power_usbevt_init(&config) );
+  (void) rhport;
 }
 
 void dcd_connect (uint8_t rhport)
diff --git a/tinyusb/portable/nordic/nrf5x/hal_nrf5x.c b/tinyusb/portable/nordic/nrf5x/hal_nrf5x.c
index e3d27e55..4d147e3c 100644
--- a/tinyusb/portable/nordic/nrf5x/hal_nrf5x.c
+++ b/tinyusb/portable/nordic/nrf5x/hal_nrf5x.c
@@ -40,6 +40,9 @@
 #include "nrf.h"
 #include "nrf_gpio.h"
 #include "nrf_clock.h"
+#include "nrf_drv_power.h"
+#include "nrf_usbd.h"
+#include "nrf_drv_usbd_errata.h"
 
 #include "tusb_hal.h"
 
@@ -47,19 +50,26 @@
 /* MACRO TYPEDEF CONSTANT ENUM
  *------------------------------------------------------------------*/
 
-
 /*------------------------------------------------------------------*/
 /* VARIABLE DECLARATION
  *------------------------------------------------------------------*/
+static void power_usb_event_handler(uint32_t event);
 
 /*------------------------------------------------------------------*/
 /* FUNCTION DECLARATION
  *------------------------------------------------------------------*/
-
-
 bool tusb_hal_init(void)
 {
-  return true;
+#ifndef SOFTDEVICE_PRESENT
+  // USB Power detection
+  const nrf_drv_power_usbevt_config_t config =
+  {
+      .handler = power_usb_event_handler
+  };
+  return ( NRF_SUCCESS == nrf_drv_power_usbevt_init(&config) );
+#else
+
+#endif
 }
 
 void tusb_hal_int_enable(uint8_t rhport)
@@ -74,4 +84,145 @@ void tusb_hal_int_disable(uint8_t rhport)
   NVIC_DisableIRQ(USBD_IRQn);
 }
 
+/*------------------------------------------------------------------*/
+/* Controller Start up Sequence
+ *------------------------------------------------------------------*/
+
+/*------------- HFCLK helper  -------------*/
+static bool is_sd_enabled(void)
+{
+#ifdef SOFTDEVICE_PRESENT
+  uint8_t sd_en = 0;
+  (void) sd_softdevice_is_enabled(&sd_en);
+
+  return sd_en;
+#else
+  return false;
+#endif
+}
+
+static bool hfclk_running(void)
+{
+#ifdef SOFTDEVICE_PRESENT
+  if ( is_sd_enabled() )
+  {
+    uint32_t is_running;
+    (void) sd_clock_hfclk_is_running(&is_running);
+    return (is_running ? true : false);
+  }
+#endif
+
+  return nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY);
+}
+
+static void hfclk_enable(void)
+{
+  // already running, nothing to do
+  if ( hfclk_running() ) return;
+
+#ifdef SOFTDEVICE_PRESENT
+  if ( is_sd_enabled() )
+  {
+    (void)sd_clock_hfclk_request();
+    return;
+  }
+#endif
+
+  nrf_clock_event_clear(NRF_CLOCK_EVENT_HFCLKSTARTED);
+  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTART);
+}
+
+static void hfclk_disable(void)
+{
+#ifdef SOFTDEVICE_PRESENT
+  if ( is_sd_enabled() )
+  {
+    (void)sd_clock_hfclk_release();
+    return;
+  }
+#endif
+
+  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
+}
+
+/*------------- 51.4 specs USBD start-up sequene -------------*/
+static void power_usb_event_handler(uint32_t event)
+{
+  switch ( event )
+  {
+    case NRF_DRV_POWER_USB_EVT_DETECTED:
+      if ( !NRF_USBD->ENABLE )
+      {
+        /* Prepare for READY event receiving */
+        nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
+
+        /* Enable the peripheral */
+        nrf_usbd_enable();
+
+        // Enable HFCLK
+        hfclk_enable();
+
+        /* Waiting for peripheral to enable, this should take a few us */
+        while ( !(NRF_USBD_EVENTCAUSE_READY_MASK & NRF_USBD->EVENTCAUSE) ) { }
+        nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
+        nrf_usbd_event_clear(NRF_USBD_EVENT_USBEVENT);
+      }
+    break;
+
+    case NRF_DRV_POWER_USB_EVT_READY:
+      // Wait for HFCLK
+      while ( !hfclk_running() ) {}
+
+      if ( nrf_drv_usbd_errata_166() )
+      {
+        *((volatile uint32_t *) (NRF_USBD_BASE + 0x800)) = 0x7E3;
+        *((volatile uint32_t *) (NRF_USBD_BASE + 0x804)) = 0x40;
+
+        __ISB(); __DSB();
+      }
+
+      nrf_usbd_isosplit_set(NRF_USBD_ISOSPLIT_Half);
+
+      // Enable interrupt. SOF is used as CDC auto flush
+      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_USBEVENT_Msk | USBD_INTEN_ACCESSFAULT_Msk |
+                           USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk |  USBD_INTEN_ENDEPOUT0_Msk |
+                           USBD_INTEN_EPDATA_Msk   | USBD_INTEN_SOF_Msk;
+
+      //  if (enable_sof || nrf_drv_usbd_errata_104())
+      //  {
+      //    ints_to_enable |= NRF_USBD_INT_SOF_MASK;
+      //  }
+
+      // Enable interrupt, Priorities 0,1,4,5 (nRF52) are reserved for SoftDevice
+      NVIC_SetPriority(USBD_IRQn, 7);
+      NVIC_ClearPendingIRQ(USBD_IRQn);
+      NVIC_EnableIRQ(USBD_IRQn);
+
+      // Enable pull up
+      nrf_usbd_pullup_enable();
+    break;
+
+    case NRF_DRV_POWER_USB_EVT_REMOVED:
+      if ( NRF_USBD->ENABLE )
+      {
+        // Abort all transfers
+
+        // Disable pull up
+        nrf_usbd_pullup_disable();
+
+        // Disable Interrupt
+        NVIC_DisableIRQ(USBD_IRQn);
+
+        // disable all interrupt
+        NRF_USBD->INTENCLR = NRF_USBD->INTEN;
+
+        nrf_usbd_disable();
+        hfclk_disable();
+      }
+    break;
+
+    default: break;
+  }
+}
+
 #endif