linux/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm SuperSpeed DWC3 USB SoC controller

maintainers:
  - Manu Gautam <mgautam@codeaurora.org>

properties:
  compatible:
    items:
      - enum:
          - qcom,msm8996-dwc3
          - qcom,msm8998-dwc3
          - qcom,sc7180-dwc3
          - qcom,sdm845-dwc3
      - const: qcom,dwc3

  reg:
    description: Offset and length of register set for QSCRATCH wrapper
    maxItems: 1

  "#address-cells":
    enum: [ 1, 2 ]

  "#size-cells":
    enum: [ 1, 2 ]

  ranges: true

  power-domains:
    description: specifies a phandle to PM domain provider node
    maxItems: 1

  clocks:
    description:
      A list of phandle and clock-specifier pairs for the clocks
      listed in clock-names.
    items:
      - description: System Config NOC clock.
      - description: Master/Core clock, has to be >= 125 MHz
          for SS operation and >= 60MHz for HS operation.
      - description: System bus AXI clock.
      - description: Mock utmi clock needed for ITP/SOF generation
          in host mode. Its frequency should be 19.2MHz.
      - description: Sleep clock, used for wakeup when
          USB3 core goes into low power mode (U3).

  clock-names:
    items:
      - const: cfg_noc
      - const: core
      - const: iface
      - const: mock_utmi
      - const: sleep

  assigned-clocks:
    items:
      - description: Phandle and clock specifier of MOCK_UTMI_CLK.
      - description: Phandle and clock specifoer of MASTER_CLK.

  assigned-clock-rates:
    items:
      - description: Must be 19.2MHz (19200000).
      - description: Must be >= 60 MHz in HS mode, >= 125 MHz in SS mode.
  resets:
    maxItems: 1

  interconnects:
    maxItems: 2

  interconnect-names:
    items:
      - const: usb-ddr
      - const: apps-usb

  interrupts:
    items:
      - description: The interrupt that is asserted
          when a wakeup event is received on USB2 bus.
      - description: The interrupt that is asserted
          when a wakeup event is received on USB3 bus.
      - description: Wakeup event on DM line.
      - description: Wakeup event on DP line.

  interrupt-names:
    items:
      - const: hs_phy_irq
      - const: ss_phy_irq
      - const: dm_hs_phy_irq
      - const: dp_hs_phy_irq

  qcom,select-utmi-as-pipe-clk:
    description:
      If present, disable USB3 pipe_clk requirement.
      Used when dwc3 operates without SSPHY and only
      HS/FS/LS modes are supported.
    type: boolean

# Required child node:

patternProperties:
  "^dwc3@[0-9a-f]+$":
    type: object
    description:
      A child node must exist to represent the core DWC3 IP block
      The content of the node is defined in dwc3.txt.

required:
  - compatible
  - reg
  - "#address-cells"
  - "#size-cells"
  - ranges
  - power-domains
  - clocks
  - clock-names
  - interrupts
  - interrupt-names

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/qcom,gcc-sdm845.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        usb@a6f8800 {
            compatible = "qcom,sdm845-dwc3", "qcom,dwc3";
            reg = <0 0x0a6f8800 0 0x400>;

            #address-cells = <2>;
            #size-cells = <2>;
            ranges;
            clocks = <&gcc GCC_CFG_NOC_USB3_PRIM_AXI_CLK>,
                     <&gcc GCC_USB30_PRIM_MASTER_CLK>,
                     <&gcc GCC_AGGRE_USB3_PRIM_AXI_CLK>,
                     <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
                     <&gcc GCC_USB30_PRIM_SLEEP_CLK>;
            clock-names = "cfg_noc", "core", "iface", "mock_utmi",
                      "sleep";

            assigned-clocks = <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
                          <&gcc GCC_USB30_PRIM_MASTER_CLK>;
            assigned-clock-rates = <19200000>, <150000000>;

            interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 486 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 488 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 489 IRQ_TYPE_LEVEL_HIGH>;
            interrupt-names = "hs_phy_irq", "ss_phy_irq",
                          "dm_hs_phy_irq", "dp_hs_phy_irq";

            power-domains = <&gcc USB30_PRIM_GDSC>;

            resets = <&gcc GCC_USB30_PRIM_BCR>;

            dwc3@a600000 {
                compatible = "snps,dwc3";
                reg = <0 0x0a600000 0 0xcd00>;
                interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
                iommus = <&apps_smmu 0x740 0>;
                snps,dis_u2_susphy_quirk;
                snps,dis_enblslpm_quirk;
                phys = <&usb_1_hsphy>, <&usb_1_ssphy>;
                phy-names = "usb2-phy", "usb3-phy";
            };
        };
    };