Documentation/devicetree/bindings/net/qca,qca7000.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/qca,qca7000.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm QCA7000

maintainers:
  - Frank Li <Frank.Li@nxp.com>

description: |
  The QCA7000 is a serial-to-powerline bridge with a host interface which could
  be configured either as SPI or UART slave. This configuration is done by
  the QCA7000 firmware.

  (a) Ethernet over SPI

  In order to use the QCA7000 as SPI device it must be defined as a child of a
  SPI master in the device tree.

  (b) Ethernet over UART

  In order to use the QCA7000 as UART slave it must be defined as a child of a
  UART master in the device tree. It is possible to preconfigure the UART
  settings of the QCA7000 firmware, but it's not possible to change them during
  runtime

properties:
  compatible:
    const: qca,qca7000

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  qca,legacy-mode:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Set the SPI data transfer of the QCA7000 to legacy mode.
      In this mode the SPI master must toggle the chip select
      between each data word. In burst mode these gaps aren't
      necessary, which is faster. This setting depends on how
      the QCA7000 is setup via GPIO pin strapping. If the
      property is missing the driver defaults to burst mode.

allOf:
  - $ref: ethernet-controller.yaml#

  - if:
      required:
        - reg

    then:
      properties:
        spi-cpha: true

        spi-cpol: true

        spi-max-frequency:
          default: 8000000
          maximum: 16000000
          minimum: 1000000

      allOf:
        - $ref: /schemas/spi/spi-peripheral-props.yaml#

    else:
      properties:
        current-speed:
          default: 115200

        qca,legacy-mode: false

      allOf:
        - $ref: /schemas/serial/serial-peripheral-props.yaml#

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>

    spi {
        #address-cells = <1>;
        #size-cells = <0>;

        ethernet@0 {
            compatible = "qca,qca7000";
            reg = <0x0>;
            interrupt-parent = <&gpio3>;
            interrupts = <25 IRQ_TYPE_EDGE_RISING>;
            spi-cpha;
            spi-cpol;
            spi-max-frequency = <8000000>;
            local-mac-address = [ a0 b0 c0 d0 e0 f0 ];
        };
    };

  - |
    serial {
        ethernet {
            compatible = "qca,qca7000";
            local-mac-address = [ a0 b0 c0 d0 e0 f0 ];
            current-speed = <38400>;
        };
    };