xref: /freebsd/sys/contrib/device-tree/Bindings/usb/ti,am62-usb.yaml (revision 01950c46b8155250f64374fb72fc11faa44bf099)

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/ti,am62-usb.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: TI's AM62 wrapper module for the Synopsys USBSS-DRD controller

maintainers:
  - Aswath Govindraju <a-govindraju@ti.com>

properties:
  compatible:
    const: ti,am62-usb

  reg:
    minItems: 1
    items:
      - description: USB CFG register space
      - description: USB PHY2 register space

  ranges: true

  power-domains:
    description:
      PM domain provider node and an args specifier containing
      the USB ISO device id value. See,
      Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
    maxItems: 1

  clocks:
    description: Clock phandle to usb2_refclk
    maxItems: 1

  clock-names:
    items:
      - const: ref

  ti,vbus-divider:
    description:
      Should be present if USB VBUS line is connected to the
      VBUS pin of the SoC via a 1/3 voltage divider.
    type: boolean

  ti,syscon-phy-pll-refclk:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      - items:
          - description: Phandle to the SYSCON entry
          - description: USB phy control register offset within SYSCON
    description:
      Specifier for conveying frequency of ref clock input, for the
      operation of USB2PHY.

  '#address-cells':
    const: 2

  '#size-cells':
    const: 2

patternProperties:
  "^usb@[0-9a-f]+$":
    $ref: snps,dwc3.yaml#
    description: Required child node

required:
  - compatible
  - reg
  - power-domains
  - clocks
  - clock-names
  - ti,syscon-phy-pll-refclk

additionalProperties: false

examples:
  - |
    #include <dt-bindings/soc/ti,sci_pm_domain.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/gpio/gpio.h>

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

      usbss1: usb@f910000 {
        compatible = "ti,am62-usb";
        reg = <0x00 0x0f910000 0x00 0x800>,
              <0x00 0x0f918000 0x00 0x400>;
        clocks = <&k3_clks 162 3>;
        clock-names = "ref";
        ti,syscon-phy-pll-refclk = <&wkup_conf 0x4018>;
        power-domains = <&k3_pds 179 TI_SCI_PD_EXCLUSIVE>;
        #address-cells = <2>;
        #size-cells = <2>;

        usb@31100000 {
          compatible = "snps,dwc3";
          reg = <0x00 0x31100000 0x00 0x50000>;
          interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>, /* irq.0 */
                       <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>; /* irq.0 */
          interrupt-names = "host", "peripheral";
          maximum-speed = "high-speed";
          dr_mode = "otg";
        };
      };
    };