diff --git a/Documentation/platforms/arm/stm32l0/boards/nucleo-l073rz/index.rst b/Documentation/platforms/arm/stm32l0/boards/nucleo-l073rz/index.rst
index 3000df30ae2..201ead1d850 100644
--- a/Documentation/platforms/arm/stm32l0/boards/nucleo-l073rz/index.rst
+++ b/Documentation/platforms/arm/stm32l0/boards/nucleo-l073rz/index.rst
@@ -7,3 +7,33 @@ ST Nucleo L073RZ
 .. tags:: chip:stm32, chip:stm32l0, chip:stm32l073
 
 The Nucleo L073RZ is a member of the Nucleo-64 board family.
+
+Serial Console
+==============
+
+The ``nsh`` and ``usb-cdc`` configurations use USART2 as the NSH console at
+115200 8N1 through the ST-LINK virtual COM port.
+
+USB Device
+==========
+
+The STM32L073RZ USB FS device interface uses PA11 for USB_DM and PA12 for
+USB_DP.  The ``usb-cdc`` configuration uses the internal HSI48 oscillator as
+the 48 MHz USB clock.  The clock recovery system synchronizes HSI48 from USB
+start of frame packets, so no external 48 MHz crystal is required.
+
+Configurations
+==============
+
+Each configuration is maintained in a sub-directory and selected with::
+
+	tools/configure.sh nucleo-l073rz:<subdir>
+
+nsh:
+----
+Configures the NuttShell (NSH) on USART2.
+
+usb-cdc:
+--------
+Configures NSH on USART2 and exposes a separate USB CDC/ACM serial device on
+the USB FS connector.