xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml (revision 8c2ecf20)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: "http://devicetree.org/schemas/usb/ti,j721e-usb.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"

title: Bindings for the TI wrapper module for the Cadence USBSS-DRD controller

maintainers:
  - Roger Quadros <rogerq@ti.com>

properties:
  compatible:
    items:
      - const: ti,j721e-usb

  reg:
    description: module registers

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

  clocks:
    description: Clock phandles to usb2_refclk and lpm_clk
    minItems: 2
    maxItems: 2

  clock-names:
    items:
      - const: ref
      - const: lpm

  ti,usb2-only:
    description:
      If present, it restricts the controller to USB2.0 mode of
      operation. Must be present if USB3 PHY is not available
      for USB.
    type: boolean

  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

  assigned-clocks:
    maxItems: 1

  assigned-clock-parents:
    maxItems: 1

  '#address-cells':
    const: 2

  '#size-cells':
    const: 2

patternProperties:
  "^usb@":
    type: object

required:
  - compatible
  - reg
  - power-domains
  - clocks
  - clock-names

additionalProperties: false

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

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

        cdns_usb@4104000 {
            compatible = "ti,j721e-usb";
            reg = <0x00 0x4104000 0x00 0x100>;
            power-domains = <&k3_pds 288 TI_SCI_PD_EXCLUSIVE>;
            clocks = <&k3_clks 288 15>, <&k3_clks 288 3>;
            clock-names = "ref", "lpm";
            assigned-clocks = <&k3_clks 288 15>;	/* USB2_REFCLK */
            assigned-clock-parents = <&k3_clks 288 16>; /* HFOSC0 */
            #address-cells = <2>;
            #size-cells = <2>;

            usb@6000000 {
                  compatible = "cdns,usb3";
                  reg = <0x00 0x6000000 0x00 0x10000>,
                        <0x00 0x6010000 0x00 0x10000>,
                        <0x00 0x6020000 0x00 0x10000>;
                  reg-names = "otg", "xhci", "dev";
                  interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,	/* irq.0 */
                               <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,	/* irq.6 */
                               <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;	/* otgirq.0 */
                  interrupt-names = "host",
                                    "peripheral",
                                    "otg";
                  maximum-speed = "super-speed";
                  dr_mode = "otg";
            };
        };
    };