diff --git a/arch/arm/src/lpc214x/lpc214x_spi.h b/arch/arm/src/lpc214x/lpc214x_spi.h
index 11d292019d2..97e2fc7a58f 100644
--- a/arch/arm/src/lpc214x/lpc214x_spi.h
+++ b/arch/arm/src/lpc214x/lpc214x_spi.h
@@ -163,4 +163,22 @@
  * Public Function Prototypes
  ************************************************************************************/
 
+struct spi_dev_s; /* Forward reference */
+
+/****************************************************************************
+ * Name: lpc214x_spibus_initialize
+ *
+ * Description:
+ *   Initialize the selected SPI port
+ *
+ * Input Parameter:
+ *   Port number (for hardware that has mutiple SPI interfaces)
+ *
+ * Returned Value:
+ *   Valid SPI device structre reference on succcess; a NULL on failure
+ *
+ ****************************************************************************/
+
+FAR struct spi_dev_s *lpc214x_spibus_initialize(int port);
+
 #endif  /* _ARCH_ARM_SRC_LPC214X_SPI_H */