2023-08-30 17:31:07 +02:00
|
|
|
# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
|
|
|
|
|
# Copyright (C) 2020 Texas Instruments Incorporated
|
|
|
|
|
%YAML 1.2
|
|
|
|
|
---
|
2023-10-24 12:59:35 +02:00
|
|
|
$id: http://devicetree.org/schemas/net/ti,dp83822.yaml#
|
|
|
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
2023-08-30 17:31:07 +02:00
|
|
|
|
|
|
|
|
title: TI DP83822 ethernet PHY
|
|
|
|
|
|
|
|
|
|
maintainers:
|
|
|
|
|
- Andrew Davis <afd@ti.com>
|
|
|
|
|
|
|
|
|
|
description: |
|
|
|
|
|
The DP83822 is a low-power, single-port, 10/100 Mbps Ethernet PHY. It
|
|
|
|
|
provides all of the physical layer functions needed to transmit and receive
|
|
|
|
|
data over standard, twisted-pair cables or to connect to an external,
|
|
|
|
|
fiber-optic transceiver. Additionally, the DP83822 provides flexibility to
|
|
|
|
|
connect to a MAC through a standard MII, RMII, or RGMII interface
|
|
|
|
|
|
|
|
|
|
Specifications about the Ethernet PHY can be found at:
|
|
|
|
|
http://www.ti.com/lit/ds/symlink/dp83822i.pdf
|
|
|
|
|
|
|
|
|
|
allOf:
|
2023-10-24 12:59:35 +02:00
|
|
|
- $ref: ethernet-phy.yaml#
|
2023-08-30 17:31:07 +02:00
|
|
|
|
|
|
|
|
properties:
|
|
|
|
|
reg:
|
|
|
|
|
maxItems: 1
|
|
|
|
|
|
|
|
|
|
ti,link-loss-low:
|
|
|
|
|
type: boolean
|
|
|
|
|
description: |
|
|
|
|
|
DP83822 PHY in Fiber mode only.
|
|
|
|
|
Sets the DP83822 to detect a link drop condition when the signal goes
|
|
|
|
|
high. If not set then link drop will occur when the signal goes low.
|
|
|
|
|
This property is only applicable if the fiber mode support is strapped
|
|
|
|
|
to on.
|
|
|
|
|
|
|
|
|
|
ti,fiber-mode:
|
|
|
|
|
type: boolean
|
|
|
|
|
description: |
|
|
|
|
|
DP83822 PHY only.
|
|
|
|
|
If present the DP83822 PHY is configured to operate in fiber mode
|
|
|
|
|
Fiber mode support can also be strapped. If the strap pin is not set
|
|
|
|
|
correctly or not set at all then this boolean can be used to enable it.
|
|
|
|
|
If the fiber mode is not strapped then signal detection for the PHY
|
|
|
|
|
is disabled.
|
|
|
|
|
In fiber mode, auto-negotiation is disabled and the PHY can only work in
|
|
|
|
|
100base-fx (full and half duplex) modes.
|
|
|
|
|
|
|
|
|
|
rx-internal-delay-ps:
|
|
|
|
|
description: |
|
|
|
|
|
DP83822 PHY only.
|
|
|
|
|
Setting this property to a non-zero number sets the RX internal delay
|
|
|
|
|
for the PHY. The internal delay for the PHY is fixed to 3.5ns relative
|
|
|
|
|
to receive data.
|
|
|
|
|
|
|
|
|
|
tx-internal-delay-ps:
|
|
|
|
|
description: |
|
|
|
|
|
DP83822 PHY only.
|
|
|
|
|
Setting this property to a non-zero number sets the TX internal delay
|
|
|
|
|
for the PHY. The internal delay for the PHY is fixed to 3.5ns relative
|
|
|
|
|
to transmit data.
|
|
|
|
|
|
|
|
|
|
required:
|
|
|
|
|
- reg
|
|
|
|
|
|
|
|
|
|
unevaluatedProperties: false
|
|
|
|
|
|
|
|
|
|
examples:
|
|
|
|
|
- |
|
|
|
|
|
mdio0 {
|
|
|
|
|
#address-cells = <1>;
|
|
|
|
|
#size-cells = <0>;
|
|
|
|
|
ethphy0: ethernet-phy@0 {
|
|
|
|
|
reg = <0>;
|
|
|
|
|
rx-internal-delay-ps = <1>;
|
|
|
|
|
tx-internal-delay-ps = <1>;
|
|
|
|
|
};
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
...
|
