From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../bindings/fpga/xilinx-pr-decoupler.txt | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt (limited to 'Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt') diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt new file mode 100644 index 000000000..0acdfa6d6 --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt @@ -0,0 +1,54 @@ +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. + +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" 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" + +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"; + regs = <0x10000045 0x10>; + clocks = <&clkc 15>; + 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>; + }; -- cgit v1.2.3