[PATCH 2/2] [POWERPC] Xilinx: hwicap: update booting-without-of.txt

[Stephen Neuendorffer]

The ICAP device in Xilinx FPGAs differs slightly between different
FPGAs.  The driver needs an additional attribute in the device tree to
distinguish this.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer at xilinx.com>
---
 Documentation/powerpc/booting-without-of.txt |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index e9a3cb1..035e28f 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -2513,6 +2513,20 @@ platforms are moved over to use the flattened-device-tree model.

       Requred properties:
        - current-speed : Baud rate of uartlite
+
+      v) Xilinx hwicap
+
+		Xilinx hwicap devices provide access to the configuration logic
+		of the FPGA through the Internal Configuration Access Port
+		(ICAP).  The ICAP enables partial reconfiguration of the FPGA,
+		readback of the configuration information, and some control over
+		'warm boots' of the FPGA fabric.
+
+		Required properties:
+		- xlnx,family : The family of the FPGA, necessary since the
+                      capabilities of the underlying ICAP hardware
+                      differ between different families.  May be
+                      'virtex2p', 'virtex4', or 'virtex5'.
 
    More devices will be defined as this spec matures.
 
-- 
1.5.3.4-dirty