xref: /linux/Documentation/devicetree/bindings/serial/cdns,uart.yaml (revision 40ccd6aa3e2e05be93394e3cd560c718dedfcc77) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/cdns,uart.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Cadence UART Controller
8
9maintainers:
10  - Michal Simek <michal.simek@amd.com>
11
12properties:
13  compatible:
14    oneOf:
15      - description: UART controller for Zynq-7xxx SoC
16        items:
17          - const: xlnx,xuartps
18          - const: cdns,uart-r1p8
19      - description: UART controller for Zynq Ultrascale+ MPSoC
20        items:
21          - const: xlnx,zynqmp-uart
22          - const: cdns,uart-r1p12
23
24  reg:
25    maxItems: 1
26
27  interrupts:
28    maxItems: 1
29
30  clocks:
31    maxItems: 2
32
33  clock-names:
34    items:
35      - const: uart_clk
36      - const: pclk
37
38  cts-override:
39    description: |
40      Override the CTS modem status signal. This signal will
41      always be reported as active instead of being obtained
42      from the modem status register. Define this if your serial
43      port does not use this pin.
44    type: boolean
45
46  power-domains:
47    maxItems: 1
48
49  resets:
50    maxItems: 1
51
52required:
53  - compatible
54  - reg
55  - interrupts
56  - clocks
57  - clock-names
58
59allOf:
60  - $ref: serial.yaml#
61  - $ref: rs485.yaml#
62  - if:
63      properties:
64        compatible:
65          contains:
66            const: cdns,uart-r1p8
67    then:
68      properties:
69        power-domains: false
70
71unevaluatedProperties: false
72
73examples:
74  - |
75    uart0: serial@e0000000 {
76        compatible = "xlnx,xuartps", "cdns,uart-r1p8";
77        clocks = <&clkc 23>, <&clkc 40>;
78        clock-names = "uart_clk", "pclk";
79        reg = <0xe0000000 0x1000>;
80        interrupts = <0 27 4>;
81    };
82