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authorSascha Hauer <s.hauer@pengutronix.de>2017-10-06 06:12:41 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2017-10-06 06:12:41 +0200
commitebde8820a04dd73a09f50ba84b8cf8ec3773d6ba (patch)
tree031d15dcd26f5b737adddc5042a3ddabbb6051f7 /dts/Bindings/fpga/xilinx-pr-decoupler.txt
parent15af9fc8cc9e18409893d2375271d64cac76924a (diff)
downloadbarebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.gz
barebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.xz
dts: update to v4.14-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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+Xilinx LogiCORE Partial Reconfig Decoupler Softcore
+
+The Xilinx LogiCORE Partial Reconfig Decoupler manages one or more
+decouplers / fpga bridges.
+The controller can decouple/disable the bridges which prevents signal
+changes from passing through the bridge. The controller can also
+couple / enable the bridges which allows traffic to pass through the
+bridge normally.
+
+The Driver supports only MMIO handling. A PR region can have multiple
+PR Decouplers which can be handled independently or chained via decouple/
+decouple_status signals.
+
+Required properties:
+- compatible : Should contain "xlnx,pr-decoupler-1.00" followed by
+ "xlnx,pr-decoupler"
+- regs : base address and size for decoupler module
+- clocks : input clock to IP
+- clock-names : should contain "aclk"
+
+Optional properties:
+- bridge-enable : 0 if driver should disable bridge at startup
+ 1 if driver should enable bridge at startup
+ Default is to leave bridge in current state.
+
+See Documentation/devicetree/bindings/fpga/fpga-region.txt for generic bindings.
+
+Example:
+ fpga-bridge@100000450 {
+ compatible = "xlnx,pr-decoupler-1.00",
+ "xlnx-pr-decoupler";
+ regs = <0x10000045 0x10>;
+ clocks = <&clkc 15>;
+ clock-names = "aclk";
+ bridge-enable = <0>;
+ };