linux/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/ti,k3-am654-cpsw-nuss.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: The TI AM654x/J721E/AM642x SoC Gigabit Ethernet MAC (Media Access Controller)

maintainers:
  - Grygorii Strashko <grygorii.strashko@ti.com>
  - Sekhar Nori <nsekhar@ti.com>

description:
  The TI AM654x/J721E SoC Gigabit Ethernet MAC (CPSW2G NUSS) has two ports
  (one external) and provides Ethernet packet communication for the device.
  The TI AM642x SoC Gigabit Ethernet MAC (CPSW3G NUSS) has three ports
  (two external) and provides Ethernet packet communication and switching.

  The internal Communications Port Programming Interface (CPPI5) (Host port 0).
  Host Port 0 CPPI Packet Streaming Interface interface supports 8 TX channels
  and one RX channels and operating by NAVSS Unified DMA  Peripheral Root
  Complex (UDMA-P) controller.

  CPSWxG features
  updated Address Lookup Engine (ALE).
  priority level Quality Of Service (QOS) support (802.1p)
  Support for Audio/Video Bridging (P802.1Qav/D6.0)
  Support for IEEE 1588 Clock Synchronization (2008 Annex D, Annex E and Annex F)
  Flow Control (802.3x) Support
  Time Sensitive Network Support
  IEEE P902.3br/D2.0 Interspersing Express Traffic
  IEEE 802.1Qbv/D2.2 Enhancements for Scheduled Traffic
  Configurable number of addresses plus VLANs
  Configurable number of classifier/policers
  VLAN support, 802.1Q compliant, Auto add port VLAN for untagged frames on
  ingress, Auto VLAN removal on egress and auto pad to minimum frame size.
  RX/TX csum offload
  Management Data Input/Output (MDIO) interface for PHYs management
  RMII/RGMII Interfaces support
  new version of Common Platform Time Sync (CPTS)

  The CPSWxG NUSS is integrated into
    device MCU domain named MCU_CPSW0 on AM654x/J721E SoC.
    device MAIN domain named CPSW0 on AM642x SoC.

  Specifications can be found at
    https://www.ti.com/lit/pdf/spruid7
    https://www.ti.com/lit/zip/spruil1
    https://www.ti.com/lit/pdf/spruim2

properties:
  "#address-cells": true
  "#size-cells": true

  compatible:
    enum:
      - ti,am654-cpsw-nuss
      - ti,j7200-cpswxg-nuss
      - ti,j721e-cpsw-nuss
      - ti,am642-cpsw-nuss

  reg:
    maxItems: 1
    description:
      The physical base address and size of full the CPSWxG NUSS IO range

  reg-names:
    items:
      - const: cpsw_nuss

  ranges: true

  dma-coherent: true

  clocks:
    maxItems: 1
    description: CPSWxG NUSS functional clock

  clock-names:
    items:
      - const: fck

  assigned-clock-parents: true

  assigned-clocks: true

  power-domains:
    maxItems: 1

  dmas:
    maxItems: 9

  dma-names:
    items:
      - const: tx0
      - const: tx1
      - const: tx2
      - const: tx3
      - const: tx4
      - const: tx5
      - const: tx6
      - const: tx7
      - const: rx

  ethernet-ports:
    type: object
    properties:
      '#address-cells':
        const: 1
      '#size-cells':
        const: 0

    patternProperties:
      "^port@[1-4]$":
        type: object
        description: CPSWxG NUSS external ports

        $ref: ethernet-controller.yaml#
        unevaluatedProperties: false

        properties:
          reg:
            minimum: 1
            maximum: 4
            description: CPSW port number

          phys:
            maxItems: 1
            description: phandle on phy-gmii-sel PHY

          label:
            description: label associated with this port

          ti,mac-only:
            $ref: /schemas/types.yaml#/definitions/flag
            description:
              Specifies the port works in mac-only mode.

          ti,syscon-efuse:
            $ref: /schemas/types.yaml#/definitions/phandle-array
            items:
              - items:
                  - description: Phandle to the system control device node which
                      provides access to efuse
                  - description: offset to efuse registers???
            description:
              Phandle to the system control device node which provides access
              to efuse IO range with MAC addresses

        required:
          - reg
          - phys

    additionalProperties: false

patternProperties:
  "^mdio@[0-9a-f]+$":
    type: object
    $ref: "ti,davinci-mdio.yaml#"

    description:
      CPSW MDIO bus.

  "^cpts@[0-9a-f]+":
    type: object
    $ref: "ti,k3-am654-cpts.yaml#"
    description:
      CPSW Common Platform Time Sync (CPTS) module.

required:
  - compatible
  - reg
  - reg-names
  - ranges
  - clocks
  - clock-names
  - power-domains
  - dmas
  - dma-names
  - '#address-cells'
  - '#size-cells'

allOf:
  - if:
      not:
        properties:
          compatible:
            contains:
              const: ti,j7200-cpswxg-nuss
    then:
      properties:
        ethernet-ports:
          patternProperties:
            "^port@[3-4]$": false

additionalProperties: false

examples:
  - |
    #include <dt-bindings/pinctrl/k3.h>
    #include <dt-bindings/soc/ti,sci_pm_domain.h>
    #include <dt-bindings/net/ti-dp83867.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    bus {
        #address-cells = <2>;
        #size-cells = <2>;

        mcu_cpsw: ethernet@46000000 {
            compatible = "ti,am654-cpsw-nuss";
            #address-cells = <2>;
            #size-cells = <2>;
            reg = <0x0 0x46000000 0x0 0x200000>;
            reg-names = "cpsw_nuss";
            ranges = <0x0 0x0 0x0 0x46000000 0x0 0x200000>;
            dma-coherent;
            clocks = <&k3_clks 5 10>;
            clock-names = "fck";
            power-domains = <&k3_pds 5 TI_SCI_PD_EXCLUSIVE>;
            pinctrl-names = "default";
            pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;

            dmas = <&mcu_udmap 0xf000>,
                   <&mcu_udmap 0xf001>,
                   <&mcu_udmap 0xf002>,
                   <&mcu_udmap 0xf003>,
                   <&mcu_udmap 0xf004>,
                   <&mcu_udmap 0xf005>,
                   <&mcu_udmap 0xf006>,
                   <&mcu_udmap 0xf007>,
                   <&mcu_udmap 0x7000>;
            dma-names = "tx0", "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
                        "rx";

            ethernet-ports {
                #address-cells = <1>;
                #size-cells = <0>;

                cpsw_port1: port@1 {
                    reg = <1>;
                    ti,mac-only;
                    label = "port1";
                    ti,syscon-efuse = <&mcu_conf 0x200>;
                    phys = <&phy_gmii_sel 1>;

                    phy-mode = "rgmii-rxid";
                    phy-handle = <&phy0>;
                };
            };

            davinci_mdio: mdio@f00 {
                compatible = "ti,cpsw-mdio","ti,davinci_mdio";
                reg = <0x0 0xf00 0x0 0x100>;
                #address-cells = <1>;
                #size-cells = <0>;
                clocks = <&k3_clks 5 10>;
                clock-names = "fck";
                bus_freq = <1000000>;

                phy0: ethernet-phy@0 {
                    reg = <0>;
                    ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
                    ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
                };
            };
        };

        cpts@3d000 {
             compatible = "ti,am65-cpts";
             reg = <0x0 0x3d000 0x0 0x400>;
             clocks = <&k3_clks 18 2>;
             clock-names = "cpts";
             interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>;
             interrupt-names = "cpts";
             ti,cpts-ext-ts-inputs = <4>;
             ti,cpts-periodic-outputs = <2>;
        };
    };