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diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
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+++ b/Documentation/powerpc/booting-without-of.txt
@@ -2601,6 +2601,17 @@ platforms are moved over to use the flattened-device-tree model.
differ between different families. May be
'virtex2p', 'virtex4', or 'virtex5'.
+ vi) Xilinx Uart 16550
+
+ Xilinx UART 16550 devices are very similar to the NS16550 but with
+ different register spacing and an offset from the base address.
+
+ Requred properties:
+ - clock-frequency : Frequency of the clock input
+ - reg-offset : A value of 3 is required
+ - reg-shift : A value of 2 is required
+
+
p) Freescale Synchronous Serial Interface
The SSI is a serial device that communicates with audio codecs. It can