xref: /freebsd/sys/contrib/device-tree/Bindings/fpga/xlnx,pr-decoupler.yaml (revision 8d13bc63c0e1d50bc9e47ac1f26329c999bfecf0)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/fpga/xlnx,pr-decoupler.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Xilinx LogiCORE Partial Reconfig Decoupler/AXI shutdown manager Softcore

maintainers:
  - Nava kishore Manne <nava.kishore.manne@amd.com>

allOf:
  - $ref: fpga-bridge.yaml#

description: |
  The Xilinx LogiCORE Partial Reconfig(PR) 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.
  Please refer to fpga-region.txt and fpga-bridge.txt in this directory for
  common binding part and usage.

properties:
  compatible:
    oneOf:
      - items:
          - const: xlnx,pr-decoupler-1.00
          - const: xlnx,pr-decoupler
      - items:
          - const: xlnx,dfx-axi-shutdown-manager-1.00
          - const: xlnx,dfx-axi-shutdown-manager

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    items:
      - const: aclk

required:
  - compatible
  - reg
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    fpga-bridge@100000450 {
      compatible = "xlnx,pr-decoupler-1.00", "xlnx,pr-decoupler";
      reg = <0x10000045 0x10>;
      clocks = <&clkc 15>;
      clock-names = "aclk";
    };
...