diff --git a/arch/arm/src/lpc43xx/Make.defs b/arch/arm/src/lpc43xx/Make.defs
index b944c210b31..3b3f8b1948f 100644
--- a/arch/arm/src/lpc43xx/Make.defs
+++ b/arch/arm/src/lpc43xx/Make.defs
@@ -133,10 +133,10 @@ CHIP_CSRCS += lpc43_spifi.c
 endif
 
 ifeq ($(CONFIG_LPC43_SSP0),y)
-CHIP_CSRCS += lpc43_ssp.c
+CHIP_CSRCS += lpc43_ssp.c lpc43_spi.c
 else
 ifeq ($(CONFIG_LPC43_SSP1),y)
-CHIP_CSRCS += lpc43_ssp.c
+CHIP_CSRCS += lpc43_ssp.c lpc43_spi.c
 endif
 endif
 
diff --git a/arch/arm/src/lpc43xx/lpc43_spi.c b/arch/arm/src/lpc43xx/lpc43_spi.c
index f1ae4bbf4f2..e56367e4ef1 100644
--- a/arch/arm/src/lpc43xx/lpc43_spi.c
+++ b/arch/arm/src/lpc43xx/lpc43_spi.c
@@ -56,6 +56,7 @@
 #include "chip.h"
 #include "lpc43_pinconfig.h"
 #include "lpc43_spi.h"
+#include "lpc43_ssp.h"
 
 #ifdef CONFIG_LPC43_SPI
 
@@ -583,3 +584,39 @@ FAR struct spi_dev_s *lpc43_spiinitialize(int port)
 
 #endif /* CONFIG_LPC43_SPI */
 
+/****************************************************************************
+ * Name: up_spiinitialize
+ *
+ * Description:
+ *   Initialize the selected SPI port
+ *   0 - SPI
+ *   1 - SSP0
+ *   2 - SSP1
+ *
+ * Input Parameter:
+ *   Port number (for hardware that has multiple SPI interfaces)
+ *
+ * Returned Value:
+ *   Valid SPI device structure reference on success; a NULL on failure
+ *
+ ****************************************************************************/
+
+FAR struct spi_dev_s *up_spiinitialize(int port)
+{
+  if (port) {
+#if ( defined(CONFIG_LPC43_SSP0) || defined(CONFIG_LPC43_SSP1) )
+    return lpc43_sspinitialize(port-1);
+#else
+    return NULL;
+#endif
+  } else {
+#if defined(CONFIG_LPC43_SPI)
+    return lpc43_spiinitialize(port);
+#else
+    return NULL;
+#endif
+  }
+}
+
+
+
diff --git a/arch/arm/src/lpc43xx/lpc43_usb0dev.c b/arch/arm/src/lpc43xx/lpc43_usb0dev.c
index 8d8237bcf9b..4af4e887919 100644
--- a/arch/arm/src/lpc43xx/lpc43_usb0dev.c
+++ b/arch/arm/src/lpc43xx/lpc43_usb0dev.c
@@ -2583,12 +2583,9 @@ void up_usbinitialize(void)
   struct lpc43_usbdev_s *priv = &g_usbdev;
   int i;
   uint32_t regval;
+  irqstate_t flags;
 
-  usbtrace(TRACE_DEVINIT, 0);
-
-  /* Disable USB interrupts */
-
-  lpc43_putreg(0, LPC43_USBDEV_USBINTR);
+  flags = irqsave();
 
   /* Initialize the device state structure */
 
@@ -2646,10 +2643,15 @@ void up_usbinitialize(void)
         }
     }
 
+  /* Enable PLL0 clock */
+
+  lpc43_pll0usbconfig();
+  lpc43_pll0usbenable();
+
   /* Clock */
 
   regval  = getreg32(LPC43_BASE_USB0_CLK);
-  regval &= ~BASE_USB0_CLK_CLKSEL_MASK;
+  regval &= ~(BASE_USB0_CLK_CLKSEL_MASK | BASE_USB0_CLK_PD) ;
   regval |= (BASE_USB0_CLKSEL_PLL0USB | BASE_USB0_CLK_AUTOBLOCK);
   putreg32(regval, LPC43_BASE_USB0_CLK);
 
@@ -2659,18 +2661,11 @@ void up_usbinitialize(void)
   regval |= CCU_CLK_CFG_RUN;
   putreg32(regval, LPC43_CCU1_M4_USB0_CFG);
 
-  /* Enable PLL0 clock */
+  //lpc43_putreg(RGU_CTRL0_USB0_RST, LPC43_RGU_CTRL0); /* Reset USB block */
 
-  lpc43_pll0usbconfig();
-  lpc43_pll0usbenable();
+  lpc43_pullup(&priv->usbdev, false); /* disconnect device */
 
-  /* Reset USB block */
-
-  lpc43_putreg(RGU_CTRL0_USB0_RST, LPC43_RGU_CTRL0);
-
-  /* Reset the controller */
-
-  lpc43_putreg (USBDEV_USBCMD_RST, LPC43_USBDEV_USBCMD);
+  lpc43_setbits (USBDEV_USBCMD_RST, LPC43_USBDEV_USBCMD); /* Reset the controller */
   while (lpc43_getreg (LPC43_USBDEV_USBCMD) & USBDEV_USBCMD_RST)
       ;
 
@@ -2680,33 +2675,25 @@ void up_usbinitialize(void)
   regval &= ~CREG0_USB0PHY;
   putreg32(regval, LPC43_CREG0);
 
-  /* Attach USB controller interrupt handler */
-
-  if (irq_attach(LPC43M4_IRQ_USB0, lpc43_usbinterrupt) != 0)
-    {
-      usbtrace(TRACE_DEVERROR(LPC43_TRACEERR_IRQREGISTRATION),
-               (uint16_t)LPC43M4_IRQ_USB0);
-      goto errout;
-    }
-
+  lpc43_putreg(0, LPC43_USBDEV_USBINTR); /* Disable USB interrupts */
 
   /* Program the controller to be the USB device controller */
 
   lpc43_putreg (USBDEV_USBMODE_SDIS | USBDEV_USBMODE_SLOM | USBDEV_USBMODE_CM_DEVICE,
           LPC43_USBDEV_USBMODE);
 
-  /* Disconnect device */
+  /* Attach USB controller interrupt handler */
 
-  lpc43_pullup(&priv->usbdev, false);
+  irq_attach(LPC43M4_IRQ_USB0, lpc43_usbinterrupt);
+  up_enable_irq(LPC43M4_IRQ_USB0);
+
+  irqrestore(flags);
 
   /* Reset/Re-initialize the USB hardware */
 
   lpc43_usbreset(priv);
 
   return;
-
-errout:
-  up_usbuninitialize();
 }
 
 /****************************************************************************
@@ -2739,7 +2726,7 @@ void up_usbuninitialize(void)
 
   /* Reset the controller */
 
-  lpc43_putreg (USBDEV_USBCMD_RST, LPC43_USBDEV_USBCMD);
+  lpc43_setbits (USBDEV_USBCMD_RST, LPC43_USBDEV_USBCMD);
   while (lpc43_getreg (LPC43_USBDEV_USBCMD) & USBDEV_USBCMD_RST)
       ;