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# SPDX-License-Identifier: GPL-2.0+
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/nxp,tja11xx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP TJA11xx PHY
maintainers:
- Andrew Lunn <andrew@lunn.ch>
- Florian Fainelli <f.fainelli@gmail.com>
- Heiner Kallweit <hkallweit1@gmail.com>
description:
Bindings for NXP TJA11xx automotive PHYs
allOf:
- $ref: ethernet-phy.yaml#
patternProperties:
"^ethernet-phy@[0-9a-f]+$":
type: object
additionalProperties: false
description: |
Some packages have multiple PHYs. Secondary PHY should be defines as
subnode of the first (parent) PHY.
properties:
reg:
minimum: 0
maximum: 31
description:
The ID number for the child PHY. Should be +1 of parent PHY.
nxp,rmii-refclk-in:
type: boolean
description: |
The REF_CLK is provided for both transmitted and received data
in RMII mode. This clock signal is provided by the PHY and is
typically derived from an external 25MHz crystal. Alternatively,
a 50MHz clock signal generated by an external oscillator can be
connected to pin REF_CLK. A third option is to connect a 25MHz
clock to pin CLK_IN_OUT. So, the REF_CLK should be configured
as input or output according to the actual circuit connection.
If present, indicates that the REF_CLK will be configured as
interface reference clock input when RMII mode enabled.
If not present, the REF_CLK will be configured as interface
reference clock output when RMII mode enabled.
Only supported on TJA1100 and TJA1101.
required:
- reg
unevaluatedProperties: false
examples:
- |
mdio {
#address-cells = <1>;
#size-cells = <0>;
tja1101_phy0: ethernet-phy@4 {
reg = <0x4>;
nxp,rmii-refclk-in;
};
};
- |
mdio {
#address-cells = <1>;
#size-cells = <0>;
tja1102_phy0: ethernet-phy@4 {
reg = <0x4>;
#address-cells = <1>;
#size-cells = <0>;
tja1102_phy1: ethernet-phy@5 {
reg = <0x5>;
};
};
};
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