1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/fpga/xlnx,p 4 $id: http://devicetree.org/schemas/fpga/xlnx,pr-decoupler.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Xilinx LogiCORE Partial Reconfig Decoup 7 title: Xilinx LogiCORE Partial Reconfig Decoupler/AXI shutdown manager Softcore
8 8
9 maintainers: 9 maintainers:
10 - Nava kishore Manne <nava.kishore.manne@amd. 10 - Nava kishore Manne <nava.kishore.manne@amd.com>
11 11
12 allOf: <<
13 - $ref: fpga-bridge.yaml# <<
14 <<
15 description: | 12 description: |
16 The Xilinx LogiCORE Partial Reconfig(PR) Dec 13 The Xilinx LogiCORE Partial Reconfig(PR) Decoupler manages one or more
17 decouplers/fpga bridges. The controller can 14 decouplers/fpga bridges. The controller can decouple/disable the bridges
18 which prevents signal changes from passing t 15 which prevents signal changes from passing through the bridge. The controller
19 can also couple / enable the bridges which a 16 can also couple / enable the bridges which allows traffic to pass through the
20 bridge normally. 17 bridge normally.
21 Xilinx LogiCORE Dynamic Function eXchange(DF 18 Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager Softcore
22 is compatible with the Xilinx LogiCORE pr-de 19 is compatible with the Xilinx LogiCORE pr-decoupler. The Dynamic Function
23 eXchange AXI shutdown manager prevents AXI t 20 eXchange AXI shutdown manager prevents AXI traffic from passing through the
24 bridge. The controller safely handles AXI4MM 21 bridge. The controller safely handles AXI4MM and AXI4-Lite interfaces on a
25 Reconfigurable Partition when it is undergoi 22 Reconfigurable Partition when it is undergoing dynamic reconfiguration,
26 preventing the system deadlock that can occu 23 preventing the system deadlock that can occur if AXI transactions are
27 interrupted by DFX. 24 interrupted by DFX.
28 Please refer to fpga-region.txt and fpga-bri 25 Please refer to fpga-region.txt and fpga-bridge.txt in this directory for
29 common binding part and usage. 26 common binding part and usage.
30 27
31 properties: 28 properties:
32 compatible: 29 compatible:
33 oneOf: 30 oneOf:
34 - items: 31 - items:
35 - const: xlnx,pr-decoupler-1.00 32 - const: xlnx,pr-decoupler-1.00
36 - const: xlnx,pr-decoupler 33 - const: xlnx,pr-decoupler
37 - items: 34 - items:
38 - const: xlnx,dfx-axi-shutdown-manag 35 - const: xlnx,dfx-axi-shutdown-manager-1.00
39 - const: xlnx,dfx-axi-shutdown-manag 36 - const: xlnx,dfx-axi-shutdown-manager
40 37
41 reg: 38 reg:
42 maxItems: 1 39 maxItems: 1
43 40
44 clocks: 41 clocks:
45 maxItems: 1 42 maxItems: 1
46 43
47 clock-names: 44 clock-names:
48 items: 45 items:
49 - const: aclk 46 - const: aclk
50 47
51 required: 48 required:
52 - compatible 49 - compatible
53 - reg 50 - reg
54 - clocks 51 - clocks
55 - clock-names 52 - clock-names
56 53
57 unevaluatedProperties: false !! 54 additionalProperties: false
58 55
59 examples: 56 examples:
60 - | 57 - |
61 fpga-bridge@100000450 { 58 fpga-bridge@100000450 {
62 compatible = "xlnx,pr-decoupler-1.00", " 59 compatible = "xlnx,pr-decoupler-1.00", "xlnx,pr-decoupler";
63 reg = <0x10000045 0x10>; 60 reg = <0x10000045 0x10>;
64 clocks = <&clkc 15>; 61 clocks = <&clkc 15>;
65 clock-names = "aclk"; 62 clock-names = "aclk";
66 }; 63 };
67 ... 64 ...
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