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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/marvell,mvusb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell USB to MDIO Controller
+
+maintainers:
+ - Tobias Waldekranz <tobias@waldekranz.com>
+
+description: |+
+ This controller is mounted on development boards for Marvell's Link Street
+ family of Ethernet switches. It allows you to configure the switch's registers
+ using the standard MDIO interface.
+
+ Since the device is connected over USB, there is no strict requirement of
+ having a device tree representation of the device. But in order to use it with
+ the mv88e6xxx driver, you need a device tree node in which to place the switch
+ definition.
+
+allOf:
+ - $ref: "mdio.yaml#"
+
+properties:
+ compatible:
+ const: usb1286,1fa4
+ reg:
+ maxItems: 1
+ description: The USB port number on the host controller
+
+required:
+ - compatible
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ /* USB host controller */
+ usb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mdio@1 {
+ compatible = "usb1286,1fa4";
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch@0 {
+ compatible = "marvell,mv88e6190";
+ reg = <0x0>;
+
+ ports {
+ /* Port definitions */
+ };
+
+ mdio {
+ /* PHY definitions */
+ };
+ };
+ };
+ };