diff --git a/configs/README.txt b/configs/README.txt
index 1d0eb0f8e9..e2b725c908 100644
--- a/configs/README.txt
+++ b/configs/README.txt
@@ -703,6 +703,12 @@ defconfig -- This is a configuration file similar to the Linux
 		CONFIG_USBDEV_TRACE - Enables USB tracing for debug
 		CONFIG_USBDEV_TRACE_NRECORDS - Number of trace entries to remember
 
+    USB host controller driver
+      CONFIG_USBHOST
+        Enables USB host support
+      CONFIG_USBHOST_NPREALLOC
+        Number of pre-allocated class instances
+
 	USB serial device class driver
 		CONFIG_USBSER
 		  Enable compilation of the USB serial driver
diff --git a/configs/nucleus2g/README.txt b/configs/nucleus2g/README.txt
index 8e75cbedca..21b04a08fb 100755
--- a/configs/nucleus2g/README.txt
+++ b/configs/nucleus2g/README.txt
@@ -418,7 +418,7 @@ Nucleus 2G Configuration Options
 	CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames.
       Automatically set if CONFIG_NET_IGMP is selected.
 
-  LPC17xx USB Configuration
+  LPC17xx USB Device Configuration
 
 	CONFIG_LPC17_USBDEV_FRAME_INTERRUPT
 	  Handle USB Start-Of-Frame events. 
@@ -433,6 +433,18 @@ Nucleus 2G Configuration Options
 	CONFIG_LPC17_USBDEV_DMA
 	  Enable lpc17xx-specific DMA support
 
+  LPC17xx USB Host Configuration
+    CONFIG_USBHOST_OHCIRAM_SIZE
+      Total size of OHCI RAM (in AHB SRAM Bank 1)
+    CONFIG_USBHOST_NEDS
+      Number of endpoint descriptors
+    CONFIG_USBHOST_TDBUFFERS
+      Number of transfer descriptor buffers
+    CONFIG_USBHOST_TDBUFSIZE
+      Size of one transfer descriptor buffer
+    CONFIG_USBHOST_IOBUFSIZE
+      Size of one end-user I/O buffer
+
 USB Host Configuration
 ^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/configs/olimex-lpc1766stk/README.txt b/configs/olimex-lpc1766stk/README.txt
index 822ae98bb7..cd7a1ca493 100755
--- a/configs/olimex-lpc1766stk/README.txt
+++ b/configs/olimex-lpc1766stk/README.txt
@@ -664,7 +664,7 @@ Olimex LPC1766-STK Configuration Options
 	CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames.
 	  Automatically set if CONFIG_NET_IGMP is selected.
 
-  LPC17xx USB Configuration
+  LPC17xx USB Device Configuration
 
 	CONFIG_LPC17_USBDEV_FRAME_INTERRUPT
 	  Handle USB Start-Of-Frame events. 
@@ -679,6 +679,18 @@ Olimex LPC1766-STK Configuration Options
 	CONFIG_LPC17_USBDEV_DMA
 	  Enable lpc17xx-specific DMA support
 
+  LPC17xx USB Host Configuration
+    CONFIG_USBHOST_OHCIRAM_SIZE
+      Total size of OHCI RAM (in AHB SRAM Bank 1)
+    CONFIG_USBHOST_NEDS
+      Number of endpoint descriptors
+    CONFIG_USBHOST_TDBUFFERS
+      Number of transfer descriptor buffers
+    CONFIG_USBHOST_TDBUFSIZE
+      Size of one transfer descriptor buffer
+    CONFIG_USBHOST_IOBUFSIZE
+      Size of one end-user I/O buffer
+
 USB Host Configuration
 ^^^^^^^^^^^^^^^^^^^^^^