diff --git a/hw/bsp/feather_nrf52840_express/board.mk b/hw/bsp/feather_nrf52840_express/board.mk
index 40cb45d4..f89baaaa 100644
--- a/hw/bsp/feather_nrf52840_express/board.mk
+++ b/hw/bsp/feather_nrf52840_express/board.mk
@@ -20,9 +20,6 @@ SRC_C += \
 	hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
 	hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
 
-# TODO remove later
-SRC_C += src/portable/$(VENDOR)/$(CHIP_FAMILY)/hal_$(CHIP_FAMILY).c
-
 INC += \
 	$(TOP)/hw/cmsis/Include \
 	$(TOP)/hw/mcu/nordic \
diff --git a/hw/bsp/feather_nrf52840_express/board_feather_nrf52840_express.c b/hw/bsp/feather_nrf52840_express/board_feather_nrf52840_express.c
index 034dab28..27f939e0 100644
--- a/hw/bsp/feather_nrf52840_express/board_feather_nrf52840_express.c
+++ b/hw/bsp/feather_nrf52840_express/board_feather_nrf52840_express.c
@@ -29,7 +29,6 @@
 #include "nrfx.h"
 #include "nrfx/hal/nrf_gpio.h"
 #include "nrfx/drivers/include/nrfx_power.h"
-#include "nrfx/drivers/include/nrfx_qspi.h"
 
 #ifdef SOFTDEVICE_PRESENT
 #include "nrf_sdm.h"
diff --git a/hw/bsp/pca10056/board.mk b/hw/bsp/pca10056/board.mk
index baea5fdc..d8f63690 100644
--- a/hw/bsp/pca10056/board.mk
+++ b/hw/bsp/pca10056/board.mk
@@ -20,9 +20,6 @@ SRC_C += \
 	hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
 	hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
 
-# TODO remove later
-SRC_C += src/portable/$(VENDOR)/$(CHIP_FAMILY)/hal_$(CHIP_FAMILY).c
-
 INC += \
 	$(TOP)/hw/cmsis/Include \
 	$(TOP)/hw/mcu/nordic \
diff --git a/hw/bsp/pca10056/board_pca10056.c b/hw/bsp/pca10056/board_pca10056.c
index 5ee6383f..3c67d942 100644
--- a/hw/bsp/pca10056/board_pca10056.c
+++ b/hw/bsp/pca10056/board_pca10056.c
@@ -29,7 +29,6 @@
 #include "nrfx.h"
 #include "nrfx/hal/nrf_gpio.h"
 #include "nrfx/drivers/include/nrfx_power.h"
-#include "nrfx/drivers/include/nrfx_qspi.h"
 
 #ifdef SOFTDEVICE_PRESENT
 #include "nrf_sdm.h"
diff --git a/src/portable/nordic/nrf5x/dcd_nrf5x.c b/src/portable/nordic/nrf5x/dcd_nrf5x.c
index 093dcfd7..931c1ab8 100644
--- a/src/portable/nordic/nrf5x/dcd_nrf5x.c
+++ b/src/portable/nordic/nrf5x/dcd_nrf5x.c
@@ -29,9 +29,16 @@
 #if TUSB_OPT_DEVICE_ENABLED && CFG_TUSB_MCU == OPT_MCU_NRF5X
 
 #include "nrf.h"
+#include "nrf_clock.h"
 #include "nrf_power.h"
 #include "nrf_usbd.h"
-#include "nrf_clock.h"
+#include "nrfx_usbd_errata.h"
+
+#ifdef SOFTDEVICE_PRESENT
+// For enable/disable hfclk with SoftDevice
+#include "nrf_sdm.h"
+#include "nrf_soc.h"
+#endif
 
 #include "device/dcd.h"
 
@@ -541,4 +548,221 @@ void USBD_IRQHandler(void)
   }
 }
 
+//--------------------------------------------------------------------+
+// HFCLK helper
+//--------------------------------------------------------------------+
+#ifdef SOFTDEVICE_PRESENT
+// check if SD is present and enabled
+static bool is_sd_enabled(void)
+{
+  uint8_t sd_en = false;
+  (void) sd_softdevice_is_enabled(&sd_en);
+  return sd_en;
+}
+#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);
+}
+
+// Power & Clock Peripheral on nRF5x to manage USB
+//
+// USB Bus power is managed by Power module, there are 3 VBUS power events:
+// Detected, Ready, Removed. Upon these power events, This function will
+// enable ( or disable ) usb & hfclk peripheral, set the usb pin pull up
+// accordingly to the controller Startup/Standby Sequence in USBD 51.4 specs.
+//
+// Therefore this function must be called to handle USB power event by
+// - nrfx_power_usbevt_init() : if Softdevice is not used or enabled
+// - SoftDevice SOC event : if SD is used and enabled
+void tusb_hal_nrf_power_event (uint32_t event)
+{
+  // Value is chosen to be as same as NRFX_POWER_USB_EVT_* in nrfx_power.h
+  enum {
+    POWER_USB_EVT_DETECTED = 0,
+    POWER_USB_EVT_REMOVED = 1,
+    POWER_USB_EVT_READY = 2
+  };
+
+  switch ( event )
+  {
+    case 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 */
+        // ERRATA 171, 187, 166
+
+        if ( nrfx_usbd_errata_187() )
+        {
+          // CRITICAL_REGION_ENTER();
+          if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
+          {
+            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+            *((volatile uint32_t *) (0x4006ED14)) = 0x00000003;
+            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+          }
+          else
+          {
+            *((volatile uint32_t *) (0x4006ED14)) = 0x00000003;
+          }
+          // CRITICAL_REGION_EXIT();
+        }
+
+        if ( nrfx_usbd_errata_171() )
+        {
+          // CRITICAL_REGION_ENTER();
+          if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
+          {
+            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+            *((volatile uint32_t *) (0x4006EC14)) = 0x000000C0;
+            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+          }
+          else
+          {
+            *((volatile uint32_t *) (0x4006EC14)) = 0x000000C0;
+          }
+          // CRITICAL_REGION_EXIT();
+        }
+
+        nrf_usbd_enable();
+
+        // Enable HFCLK
+        hfclk_enable();
+      }
+    break;
+
+    case POWER_USB_EVT_READY:
+      /* Waiting for USBD peripheral enabled */
+      while ( !(USBD_EVENTCAUSE_READY_Msk & NRF_USBD->EVENTCAUSE) ) { }
+
+      nrf_usbd_eventcause_clear(USBD_EVENTCAUSE_READY_Msk);
+      nrf_usbd_event_clear(USBD_EVENTCAUSE_READY_Msk);
+
+      if ( nrfx_usbd_errata_171() )
+      {
+        // CRITICAL_REGION_ENTER();
+        if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
+        {
+          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+          *((volatile uint32_t *) (0x4006EC14)) = 0x00000000;
+          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+        }
+        else
+        {
+          *((volatile uint32_t *) (0x4006EC14)) = 0x00000000;
+        }
+
+        // CRITICAL_REGION_EXIT();
+      }
+
+      if ( nrfx_usbd_errata_187() )
+      {
+        // CRITICAL_REGION_ENTER();
+        if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
+        {
+          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+          *((volatile uint32_t *) (0x4006ED14)) = 0x00000000;
+          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
+        }
+        else
+        {
+          *((volatile uint32_t *) (0x4006ED14)) = 0x00000000;
+        }
+        // CRITICAL_REGION_EXIT();
+      }
+
+      if ( nrfx_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(USBD_ISOSPLIT_SPLIT_HalfIN);
+
+      // Enable interrupt
+      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_EPDATA_Msk |
+          USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk | USBD_INTEN_ENDEPOUT0_Msk;
+
+      // Enable interrupt, priorities should be set by application
+      NVIC_ClearPendingIRQ(USBD_IRQn);
+      NVIC_EnableIRQ(USBD_IRQn);
+
+      // Wait for HFCLK
+      while ( !hfclk_running() ) { }
+
+      // Enable pull up
+      nrf_usbd_pullup_enable();
+    break;
+
+    case 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();
+
+        dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, true);
+      }
+    break;
+
+    default: break;
+  }
+}
+
 #endif
diff --git a/src/portable/nordic/nrf5x/hal_nrf5x.c b/src/portable/nordic/nrf5x/hal_nrf5x.c
deleted file mode 100644
index 398f201e..00000000
--- a/src/portable/nordic/nrf5x/hal_nrf5x.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/* 
- * The MIT License (MIT)
- *
- * Copyright (c) 2019 Ha Thach (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 TUSB_OPT_DEVICE_ENABLED && CFG_TUSB_MCU == OPT_MCU_NRF5X
-
-#include "nrf.h"
-#include "nrf_gpio.h"
-#include "nrf_clock.h"
-#include "nrf_usbd.h"
-#include "nrfx_usbd_errata.h"
-
-#ifdef SOFTDEVICE_PRESENT
-#include "nrf_sdm.h"
-#include "nrf_soc.h"
-#endif
-
-#include "nrfx_power.h"
-#include "device/dcd.h"
-
-/*------------------------------------------------------------------*/
-/* MACRO TYPEDEF CONSTANT ENUM
- *------------------------------------------------------------------*/
-void tusb_hal_nrf_power_event(uint32_t event);
-
-/*------------------------------------------------------------------*/
-/* HFCLK helper
- *------------------------------------------------------------------*/
-
-#ifdef SOFTDEVICE_PRESENT
-// check if SD is present and enabled
-static bool is_sd_enabled(void)
-{
-  uint8_t sd_en = false;
-  (void) sd_softdevice_is_enabled(&sd_en);
-  return sd_en;
-}
-#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);
-}
-
-/*------------------------------------------------------------------*/
-/* Controller Start up Sequence (USBD 51.4 specs)
- *------------------------------------------------------------------*/
-// tusb_hal_nrf_power_event must be called by SOC event handler
-void tusb_hal_nrf_power_event (uint32_t event)
-{
-  switch ( event )
-  {
-    case NRFX_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 */
-        // ERRATA 171, 187, 166
-
-        if ( nrfx_usbd_errata_187() )
-        {
-          // CRITICAL_REGION_ENTER();
-          if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
-          {
-            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-            *((volatile uint32_t *) (0x4006ED14)) = 0x00000003;
-            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-          }
-          else
-          {
-            *((volatile uint32_t *) (0x4006ED14)) = 0x00000003;
-          }
-          // CRITICAL_REGION_EXIT();
-        }
-
-        if ( nrfx_usbd_errata_171() )
-        {
-          // CRITICAL_REGION_ENTER();
-          if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
-          {
-            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-            *((volatile uint32_t *) (0x4006EC14)) = 0x000000C0;
-            *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-          }
-          else
-          {
-            *((volatile uint32_t *) (0x4006EC14)) = 0x000000C0;
-          }
-          // CRITICAL_REGION_EXIT();
-        }
-
-        nrf_usbd_enable();
-
-        // Enable HFCLK
-        hfclk_enable();
-      }
-    break;
-
-    case NRFX_POWER_USB_EVT_READY:
-      /* Waiting for USBD peripheral enabled */
-      while ( !(USBD_EVENTCAUSE_READY_Msk & NRF_USBD->EVENTCAUSE) ) { }
-
-      nrf_usbd_eventcause_clear(USBD_EVENTCAUSE_READY_Msk);
-      nrf_usbd_event_clear(USBD_EVENTCAUSE_READY_Msk);
-
-      if ( nrfx_usbd_errata_171() )
-      {
-        // CRITICAL_REGION_ENTER();
-        if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
-        {
-          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-          *((volatile uint32_t *) (0x4006EC14)) = 0x00000000;
-          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-        }
-        else
-        {
-          *((volatile uint32_t *) (0x4006EC14)) = 0x00000000;
-        }
-
-        // CRITICAL_REGION_EXIT();
-      }
-
-      if ( nrfx_usbd_errata_187() )
-      {
-        // CRITICAL_REGION_ENTER();
-        if ( *((volatile uint32_t *) (0x4006EC00)) == 0x00000000 )
-        {
-          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-          *((volatile uint32_t *) (0x4006ED14)) = 0x00000000;
-          *((volatile uint32_t *) (0x4006EC00)) = 0x00009375;
-        }
-        else
-        {
-          *((volatile uint32_t *) (0x4006ED14)) = 0x00000000;
-        }
-        // CRITICAL_REGION_EXIT();
-      }
-
-      if ( nrfx_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(USBD_ISOSPLIT_SPLIT_HalfIN);
-
-      // Enable interrupt
-      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_EPDATA_Msk |
-          USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk | USBD_INTEN_ENDEPOUT0_Msk;
-
-      // Enable interrupt, priorities should be set by application
-      NVIC_ClearPendingIRQ(USBD_IRQn);
-      NVIC_EnableIRQ(USBD_IRQn);
-
-      // Wait for HFCLK
-      while ( !hfclk_running() ) { }
-
-      // Enable pull up
-      nrf_usbd_pullup_enable();
-    break;
-
-    case NRFX_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();
-
-        dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, true);
-      }
-    break;
-
-    default: break;
-  }
-}
-
-#endif