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