1 # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
2 # Copyright (C) 2020 Texas Instruments Incorporated
5 $id: "http://devicetree.org/schemas/net/ti,dp83822.yaml#"
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
8 title: TI DP83822 ethernet PHY
11 - Dan Murphy <dmurphy@ti.com>
14 The DP83822 is a low-power, single-port, 10/100 Mbps Ethernet PHY. It
15 provides all of the physical layer functions needed to transmit and receive
16 data over standard, twisted-pair cables or to connect to an external,
17 fiber-optic transceiver. Additionally, the DP83822 provides flexibility to
18 connect to a MAC through a standard MII, RMII, or RGMII interface
20 Specifications about the Ethernet PHY can be found at:
21 http://www.ti.com/lit/ds/symlink/dp83822i.pdf
24 - $ref: "ethernet-phy.yaml#"
33 DP83822 PHY in Fiber mode only.
34 Sets the DP83822 to detect a link drop condition when the signal goes
35 high. If not set then link drop will occur when the signal goes low.
36 This property is only applicable if the fiber mode support is strapped
43 If present the DP83822 PHY is configured to operate in fiber mode
44 Fiber mode support can also be strapped. If the strap pin is not set
45 correctly or not set at all then this boolean can be used to enable it.
46 If the fiber mode is not strapped then signal detection for the PHY
48 In fiber mode, auto-negotiation is disabled and the PHY can only work in
49 100base-fx (full and half duplex) modes.
54 Setting this property to a non-zero number sets the RX internal delay
55 for the PHY. The internal delay for the PHY is fixed to 3.5ns relative
61 Setting this property to a non-zero number sets the TX internal delay
62 for the PHY. The internal delay for the PHY is fixed to 3.5ns relative
68 unevaluatedProperties: false
75 ethphy0: ethernet-phy@0 {
77 rx-internal-delay-ps = <1>;
78 tx-internal-delay-ps = <1>;