xref: /openbmc/linux/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3hs-phy.yaml (revision 134ab284)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/socionext,uniphier-usb3hs-phy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Socionext UniPhier USB3 High-Speed (HS) PHY

description: |
  This describes the devicetree bindings for PHY interfaces built into
  USB3 controller implemented on Socionext UniPhier SoCs.
  Although the controller includes High-Speed PHY and Super-Speed PHY,
  this describes about High-Speed PHY.

maintainers:
  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>

properties:
  compatible:
    enum:
      - socionext,uniphier-pro5-usb3-hsphy
      - socionext,uniphier-pxs2-usb3-hsphy
      - socionext,uniphier-ld20-usb3-hsphy
      - socionext,uniphier-pxs3-usb3-hsphy

  reg:
    description: PHY register region (offset and length)

  "#phy-cells":
    const: 0

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    oneOf:
      - const: link          # for PXs2
      - items:               # for PXs3
        - const: link
        - const: phy

  resets:
    maxItems: 2

  reset-names:
    items:
      - const: link
      - const: phy

  vbus-supply:
    description: A phandle to the regulator for USB VBUS

  nvmem-cells:
    maxItems: 3
    description:
      Phandles to nvmem cell that contains the trimming data.
      Available only for HS-PHY implemented on LD20 and PXs3, and
      if unspecified, default value is used.

  nvmem-cell-names:
    items:
      - const: rterm
      - const: sel_t
      - const: hs_i
    description:
      Should be the following names, which correspond to each nvmem-cells.
      All of the 3 parameters associated with the above names are
      required for each port, if any one is omitted, the trimming data
      of the port will not be set at all.

required:
  - compatible
  - reg
  - "#phy-cells"
  - clocks
  - clock-names
  - resets
  - reset-names

additionalProperties: false

examples:
  - |
    usb-glue@65b00000 {
        compatible = "socionext,uniphier-ld20-dwc3-glue", "simple-mfd";
        #address-cells = <1>;
        #size-cells = <1>;
        ranges = <0 0x65b00000 0x400>;

        usb_hsphy0: hs-phy@200 {
            compatible = "socionext,uniphier-ld20-usb3-hsphy";
            reg = <0x200 0x10>;
            #phy-cells = <0>;
            clock-names = "link", "phy";
            clocks = <&sys_clk 14>, <&sys_clk 16>;
            reset-names = "link", "phy";
            resets = <&sys_rst 14>, <&sys_rst 16>;
            vbus-supply = <&usb_vbus0>;
            nvmem-cell-names = "rterm", "sel_t", "hs_i";
            nvmem-cells = <&usb_rterm0>, <&usb_sel_t0>, <&usb_hs_i0>;
        };
    };