55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
|
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>;
|
||
|
|
};
|