Commit 8058182f authored by Nava kishore Manne's avatar Nava kishore Manne Committed by Greg Kroah-Hartman
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dt-bindings: fpga: Add compatible value for Xilinx DFX AXI shutdown manager 



This patch Adds compatible value for Xilinx Dynamic Function eXchnage(DFX)
AXI Shutdown manager IP.

Signed-off-by: default avatarNava kishore Manne <nava.manne@xilinx.com>
Reviewed-by: default avatarTom Rix <trix@redhat.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMoritz Fischer <mdf@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b5c6ecfd

Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt

+23 −1
Original line number Diff line number Diff line
@@ -7,13 +7,24 @@ changes from passing through the bridge. The controller can also 
couple / enable the bridges which allows traffic to pass through the

bridge normally.



Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager

Softcore is compatible with the Xilinx LogiCORE pr-decoupler.



The Dynamic Function eXchange AXI shutdown manager prevents AXI traffic

from passing through the bridge. The controller safely handles AXI4MM

and AXI4-Lite interfaces on a Reconfigurable Partition when it is

undergoing dynamic reconfiguration, preventing the system deadlock

that can occur if AXI transactions are interrupted by DFX



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"

                          "xlnx,pr-decoupler" or

                          "xlnx,dfx-axi-shutdown-manager-1.00" followed by

                          "xlnx,dfx-axi-shutdown-manager"

- regs			: base address and size for decoupler module

- clocks		: input clock to IP

- clock-names		: should contain "aclk"
@@ -22,6 +33,7 @@ See Documentation/devicetree/bindings/fpga/fpga-region.txt and 
Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings.



Example:

Partial Reconfig Decoupler:

	fpga-bridge@100000450 {

		compatible = "xlnx,pr-decoupler-1.00",

			     "xlnx-pr-decoupler";
@@ -30,3 +42,13 @@ Example: 
		clock-names = "aclk";

		bridge-enable = <0>;

	};



Dynamic Function eXchange AXI shutdown manager:

	fpga-bridge@100000450 {

		compatible = "xlnx,dfx-axi-shutdown-manager-1.00",

			     "xlnx,dfx-axi-shutdown-manager";

		regs = <0x10000045 0x10>;

		clocks = <&clkc 15>;

		clock-names = "aclk";

		bridge-enable = <0>;

	};