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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/qcom,ipq4019-mdio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm IPQ40xx MDIO Controller
maintainers:
- Robert Marko <robert.marko@sartura.hr>
properties:
compatible:
oneOf:
- enum:
- qcom,ipq4019-mdio
- qcom,ipq5018-mdio
- items:
- enum:
- qcom,ipq6018-mdio
- qcom,ipq8074-mdio
- const: qcom,ipq4019-mdio
"#address-cells":
const: 1
"#size-cells":
const: 0
reg:
minItems: 1
maxItems: 2
description:
the first Address and length of the register set for the MDIO controller.
the second Address and length of the register for ethernet LDO, this second
address range is only required by the platform IPQ50xx.
clocks:
items:
- description: MDIO clock source frequency fixed to 100MHZ
clock-names:
items:
- const: gcc_mdio_ahb_clk
clock-frequency:
description:
The MDIO bus clock that must be output by the MDIO bus hardware, if
absent, the default hardware values are used.
MDC rate is feed by an external clock (fixed 100MHz) and is divider
internally. The default divider is /256 resulting in the default rate
applied of 390KHz.
To follow 802.3 standard that instruct up to 2.5MHz by default, if
this property is not declared and the divider is set to /256, by
default 1.5625Mhz is select.
enum: [ 390625, 781250, 1562500, 3125000, 6250000, 12500000 ]
default: 1562500
required:
- compatible
- reg
- "#address-cells"
- "#size-cells"
allOf:
- $ref: mdio.yaml#
- if:
properties:
compatible:
contains:
enum:
- qcom,ipq5018-mdio
- qcom,ipq6018-mdio
- qcom,ipq8074-mdio
then:
required:
- clocks
- clock-names
else:
properties:
clocks: false
clock-names: false
unevaluatedProperties: false
examples:
- |
mdio@90000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "qcom,ipq4019-mdio";
reg = <0x90000 0x64>;
ethphy0: ethernet-phy@0 {
reg = <0>;
};
ethphy1: ethernet-phy@1 {
reg = <1>;
};
ethphy2: ethernet-phy@2 {
reg = <2>;
};
ethphy3: ethernet-phy@3 {
reg = <3>;
};
ethphy4: ethernet-phy@4 {
reg = <4>;
};
};
|
