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authorStephen Neuendorffer <stephen.neuendorffer@xilinx.com>2008-02-06 04:24:10 +1100
committerGrant Likely <grant.likely@secretlab.ca>2008-02-06 10:23:52 -0700
commitef66a9d222718f080018d07f691faa1f01789e7d (patch)
tree9aa8cd2cc1aac087a4d6f9f0cf5b01d695e6e8da /Documentation/powerpc/booting-without-of.txt
parentef141a0bb0dc6172bb8fe5408cf8adbd5f76ff45 (diff)
[POWERPC] Xilinx: hwicap: update booting-without-of.txt
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@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index b5e46efeba8..2efea2d497f 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -2577,6 +2577,20 @@ 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'.
+
p) Freescale Synchronous Serial Interface
The SSI is a serial device that communicates with audio codecs. It can