162d77ff7SMaxime Ripard# SPDX-License-Identifier: GPL-2.0 262d77ff7SMaxime Ripard%YAML 1.2 362d77ff7SMaxime Ripard--- 462d77ff7SMaxime Ripard$id: http://devicetree.org/schemas/net/mdio.yaml# 562d77ff7SMaxime Ripard$schema: http://devicetree.org/meta-schemas/core.yaml# 662d77ff7SMaxime Ripard 762d77ff7SMaxime Ripardtitle: MDIO Bus Generic Binding 862d77ff7SMaxime Ripard 962d77ff7SMaxime Ripardmaintainers: 1062d77ff7SMaxime Ripard - Andrew Lunn <andrew@lunn.ch> 1162d77ff7SMaxime Ripard - Florian Fainelli <f.fainelli@gmail.com> 1262d77ff7SMaxime Ripard - Heiner Kallweit <hkallweit1@gmail.com> 1362d77ff7SMaxime Ripard 1462d77ff7SMaxime Riparddescription: 1562d77ff7SMaxime Ripard These are generic properties that can apply to any MDIO bus. Any 1662d77ff7SMaxime Ripard MDIO bus must have a list of child nodes, one per device on the 1762d77ff7SMaxime Ripard bus. These should follow the generic ethernet-phy.yaml document, or 1862d77ff7SMaxime Ripard a device specific binding document. 1962d77ff7SMaxime Ripard 2062d77ff7SMaxime Ripardproperties: 214c2c04c2SMaxime Ripard $nodename: 224c2c04c2SMaxime Ripard pattern: "^mdio(@.*)?" 234c2c04c2SMaxime Ripard 24960ebc8aSMaxime Ripard "#address-cells": 25960ebc8aSMaxime Ripard const: 1 26960ebc8aSMaxime Ripard 27960ebc8aSMaxime Ripard "#size-cells": 28960ebc8aSMaxime Ripard const: 0 29960ebc8aSMaxime Ripard 3062d77ff7SMaxime Ripard reset-gpios: 3162d77ff7SMaxime Ripard maxItems: 1 3262d77ff7SMaxime Ripard description: 3362d77ff7SMaxime Ripard The phandle and specifier for the GPIO that controls the RESET 3462d77ff7SMaxime Ripard lines of all PHYs on that MDIO bus. 3562d77ff7SMaxime Ripard 3662d77ff7SMaxime Ripard reset-delay-us: 3762d77ff7SMaxime Ripard description: 3862d77ff7SMaxime Ripard RESET pulse width in microseconds. It applies to all PHY devices 3962d77ff7SMaxime Ripard and must therefore be appropriately determined based on all PHY 4062d77ff7SMaxime Ripard requirements (maximum value of all per-PHY RESET pulse widths). 4162d77ff7SMaxime Ripard 425b19b6c3SMaxime RipardpatternProperties: 435b19b6c3SMaxime Ripard "^ethernet-phy@[0-9a-f]+$": 445b19b6c3SMaxime Ripard type: object 455b19b6c3SMaxime Ripard 465b19b6c3SMaxime Ripard properties: 475b19b6c3SMaxime Ripard reg: 485b19b6c3SMaxime Ripard minimum: 0 495b19b6c3SMaxime Ripard maximum: 31 505b19b6c3SMaxime Ripard description: 515b19b6c3SMaxime Ripard The ID number for the PHY. 525b19b6c3SMaxime Ripard 535b19b6c3SMaxime Ripard required: 545b19b6c3SMaxime Ripard - reg 555b19b6c3SMaxime Ripard 5662d77ff7SMaxime Ripardexamples: 5762d77ff7SMaxime Ripard - | 5862d77ff7SMaxime Ripard davinci_mdio: mdio@5c030000 { 5962d77ff7SMaxime Ripard compatible = "ti,davinci_mdio"; 6062d77ff7SMaxime Ripard reg = <0x5c030000 0x1000>; 6162d77ff7SMaxime Ripard #address-cells = <1>; 6262d77ff7SMaxime Ripard #size-cells = <0>; 6362d77ff7SMaxime Ripard 6462d77ff7SMaxime Ripard reset-gpios = <&gpio2 5 1>; 6562d77ff7SMaxime Ripard reset-delay-us = <2>; 6662d77ff7SMaxime Ripard 6762d77ff7SMaxime Ripard ethphy0: ethernet-phy@1 { 6862d77ff7SMaxime Ripard reg = <1>; 6962d77ff7SMaxime Ripard }; 7062d77ff7SMaxime Ripard 7162d77ff7SMaxime Ripard ethphy1: ethernet-phy@3 { 7262d77ff7SMaxime Ripard reg = <3>; 7362d77ff7SMaxime Ripard }; 7462d77ff7SMaxime Ripard }; 75