xref: /freebsd-src/sys/contrib/device-tree/Bindings/serial/cdns,uart.yaml (revision 7d0873ebb83b19ba1e8a89e679470d885efe12e3)

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

title: Cadence UART Controller

maintainers:
  - Michal Simek <michal.simek@amd.com>

properties:
  compatible:
    oneOf:
      - description: UART controller for Zynq-7xxx SoC
        items:
          - const: xlnx,xuartps
          - const: cdns,uart-r1p8
      - description: UART controller for Zynq Ultrascale+ MPSoC
        items:
          - const: xlnx,zynqmp-uart
          - const: cdns,uart-r1p12

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 2

  clock-names:
    items:
      - const: uart_clk
      - const: pclk

  cts-override:
    description: |
      Override the CTS modem status signal. This signal will
      always be reported as active instead of being obtained
      from the modem status register. Define this if your serial
      port does not use this pin.
    type: boolean

  power-domains:
    maxItems: 1

  resets:
    maxItems: 1

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

allOf:
  - $ref: serial.yaml#
  - $ref: rs485.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: cdns,uart-r1p8
    then:
      properties:
        power-domains: false

unevaluatedProperties: false

examples:
  - |
    uart0: serial@e0000000 {
        compatible = "xlnx,xuartps", "cdns,uart-r1p8";
        clocks = <&clkc 23>, <&clkc 40>;
        clock-names = "uart_clk", "pclk";
        reg = <0xe0000000 0x1000>;
        interrupts = <0 27 4>;
    };