xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/net/ti,dp83869.yaml (revision 8c2ecf20)

# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
# Copyright (C) 2019 Texas Instruments Incorporated
%YAML 1.2
---
$id: "http://devicetree.org/schemas/net/ti,dp83869.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"

title: TI DP83869 ethernet PHY

allOf:
  - $ref: "ethernet-phy.yaml#"

maintainers:
  - Dan Murphy <dmurphy@ti.com>

description: |
  The DP83869HM device is a robust, fully-featured Gigabit (PHY) transceiver
  with integrated PMD sublayers that supports 10BASE-Te, 100BASE-TX and
  1000BASE-T Ethernet protocols. The DP83869 also supports 1000BASE-X and
  100BASE-FX Fiber protocols.
  This device interfaces to the MAC layer through Reduced GMII (RGMII) and
  SGMII The DP83869HM supports Media Conversion in Managed mode. In this mode,
  the DP83869HM can run 1000BASE-X-to-1000BASE-T and 100BASE-FX-to-100BASE-TX
  conversions.  The DP83869HM can also support Bridge Conversion from RGMII to
  SGMII and SGMII to RGMII.

  Specifications about the Ethernet PHY can be found at:
    http://www.ti.com/lit/ds/symlink/dp83869hm.pdf

properties:
  reg:
    maxItems: 1

  ti,min-output-impedance:
    type: boolean
    description: |
       MAC Interface Impedance control to set the programmable output impedance
       to a minimum value (35 ohms).

  ti,max-output-impedance:
    type: boolean
    description: |
       MAC Interface Impedance control to set the programmable output impedance
       to a maximum value (70 ohms).

  tx-fifo-depth:
    $ref: /schemas/types.yaml#definitions/uint32
    description: |
       Transmitt FIFO depth see dt-bindings/net/ti-dp83869.h for values

  rx-fifo-depth:
    $ref: /schemas/types.yaml#definitions/uint32
    description: |
       Receive FIFO depth see dt-bindings/net/ti-dp83869.h for values

  ti,clk-output-sel:
    $ref: /schemas/types.yaml#definitions/uint32
    description: |
       Muxing option for CLK_OUT pin see dt-bindings/net/ti-dp83869.h for values.

  ti,op-mode:
    $ref: /schemas/types.yaml#definitions/uint32
    description: |
       Operational mode for the PHY.  If this is not set then the operational
       mode is set by the straps. see dt-bindings/net/ti-dp83869.h for values

  rx-internal-delay-ps:
    description: Delay is in pico seconds
    enum: [ 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000,
            3250, 3500, 3750, 4000 ]
    default: 2000

  tx-internal-delay-ps:
    description: Delay is in pico seconds
    enum: [ 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000,
            3250, 3500, 3750, 4000 ]
    default: 2000

required:
  - reg

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/net/ti-dp83869.h>
    mdio0 {
      #address-cells = <1>;
      #size-cells = <0>;
      ethphy0: ethernet-phy@0 {
        reg = <0>;
        tx-fifo-depth = <DP83869_PHYCR_FIFO_DEPTH_4_B_NIB>;
        rx-fifo-depth = <DP83869_PHYCR_FIFO_DEPTH_4_B_NIB>;
        ti,op-mode = <DP83869_RGMII_COPPER_ETHERNET>;
        ti,max-output-impedance = "true";
        ti,clk-output-sel = <DP83869_CLK_O_SEL_CHN_A_RCLK>;
        rx-internal-delay-ps = <2000>;
        tx-internal-delay-ps = <2000>;
      };
    };