ark1668ed-bsp/linux/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/delta,tn48m-cpld.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Delta Networks TN48M CPLD controller

maintainers:
  - Robert Marko <robert.marko@sartura.hr>

description: |
  Lattice CPLD onboard the TN48M switches is used for system
  management.

  It provides information about the hardware model, revision,
  PSU status etc.

  It is also being used as a GPIO expander and reset controller
  for the switch MAC-s and other peripherals.

properties:
  compatible:
    const: delta,tn48m-cpld

  reg:
    description:
      I2C device address.
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

required:
  - compatible
  - reg
  - "#address-cells"
  - "#size-cells"

patternProperties:
  "^gpio(@[0-9a-f]+)?$":
    $ref: /schemas/gpio/delta,tn48m-gpio.yaml

  "^reset-controller?$":
    $ref: /schemas/reset/delta,tn48m-reset.yaml

additionalProperties: false

examples:
  - |
    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        cpld@41 {
            compatible = "delta,tn48m-cpld";
            reg = <0x41>;
            #address-cells = <1>;
            #size-cells = <0>;

            gpio@31 {
                compatible = "delta,tn48m-gpo";
                reg = <0x31>;
                gpio-controller;
                #gpio-cells = <2>;
            };

            gpio@3a {
                compatible = "delta,tn48m-gpi";
                reg = <0x3a>;
                gpio-controller;
                #gpio-cells = <2>;
            };

            gpio@40 {
                compatible = "delta,tn48m-gpi";
                reg = <0x40>;
                gpio-controller;
                #gpio-cells = <2>;
            };

            reset-controller {
              compatible = "delta,tn48m-reset";
              #reset-cells = <1>;
            };
        };
    };