arm: mvebu: clearfog: document boot from UART
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/solidrun/clearfog/README b/board/solidrun/clearfog/README
index 2cfa5bf..ef1e3bf 100644
--- a/board/solidrun/clearfog/README
+++ b/board/solidrun/clearfog/README
@@ -16,3 +16,23 @@
Please use the correct device node for your setup instead
of "/dev/sdX" here!
+
+Boot from UART:
+---------------
+
+Connect the on-board micro-USB (CF Pro: CON11, CF Base: CON5)
+to your host.
+
+Set the SW1 DIP switches to UART boot (0: OFF, 1: ON):
+
+ ClearFog Base: 01001
+ ClearFog Pro: 11110
+
+Run the following command to initiate U-Boot download:
+
+ ./tools/kwboot -b u-boot-spl.kwb /dev/ttyUSBX
+
+Use the correct UART device node for /dev/ttyUSBX.
+
+When download finishes start your favorite terminal emulator
+on /dev/ttyUSBX.