[PATCH 1/2] doc: fpga: Add reset bridge support

[<shubhrajyoti.datta@gmail.com>]

From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>

Add reset bridge support. Once this bridge is enabled.
The reset line(s) will be toggled. Generally it will be
called after the bitstream load to reset the PL.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
---
 .../devicetree/bindings/fpga/xlnx,rst-bridge.txt   | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fpga/xlnx,rst-bridge.txt

diff --git a/Documentation/devicetree/bindings/fpga/xlnx,rst-bridge.txt b/Documentation/devicetree/bindings/fpga/xlnx,rst-bridge.txt
new file mode 100644
index 0000000..6f1bfc2
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/xlnx,rst-bridge.txt
@@ -0,0 +1,22 @@
+Xilinx fpga reset bridge
+
+The Xilinx reset bridge toggles the reset line to the PL
+in Zynqmp Ultrascale plus.
+
+
+Required properties:
+- compatible	: Should contain "xlnx,rst-bridge"
+- reset		: reset phandles
+
+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_rst_bridge: fpga_rst_bridge {
+	compatible = "xlnx,rst-bridge";
+	resets = <&rst 115>;
+};
-- 
2.1.1