dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings

Qualcomm SuperSpeed DWC3 USB SoC controller

Required properties:

- compatible:		Compatible list, contains

			"qcom,dwc3"

			"qcom,msm8996-dwc3" for msm8996 SOC.

			"qcom,msm8998-dwc3" for msm8998 SOC.

			"qcom,sdm845-dwc3" for sdm845 SOC.

- reg:			Offset and length of register set for QSCRATCH wrapper

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

- clocks:		A list of phandle + clock-specifier pairs for the

				clocks listed in clock-names

- clock-names:		Should contain the following:

  "core"		Master/Core clock, have to be >= 125 MHz for SS

				operation and >= 60MHz for HS operation

  "mock_utmi"		Mock utmi clock needed for ITP/SOF generation in

				host mode. Its frequency should be 19.2MHz.

  "sleep"		Sleep clock, used for wakeup when USB3 core goes

				into low power mode (U3).

Optional clocks:

  "iface"		System bus AXI clock.

			Not present on "qcom,msm8996-dwc3" compatible.

  "cfg_noc"		System Config NOC clock.

			Not present on "qcom,msm8996-dwc3" compatible.

- assigned-clocks:	Should be:

				MOCK_UTMI_CLK

				MASTER_CLK

- assigned-clock-rates: Should be:

                                19.2Mhz (192000000) for MOCK_UTMI_CLK

                                >=125Mhz (125000000) for MASTER_CLK in SS mode

                                >=60Mhz (60000000) for MASTER_CLK in HS mode

Optional properties:

- resets:		Phandle to reset control that resets core and wrapper.

- interrupts:		specifies interrupts from controller wrapper used

			to wakeup from low power/susepnd state.	Must contain

			one or more entry for interrupt-names property

- interrupt-names:	Must include the following entries:

			- "hs_phy_irq": The interrupt that is asserted when a

			   wakeup event is received on USB2 bus

			- "ss_phy_irq": The interrupt that is asserted when a

			   wakeup event is received on USB3 bus

			- "dm_hs_phy_irq" and "dp_hs_phy_irq": Separate

			   interrupts for any wakeup event on DM and DP lines

- qcom,select-utmi-as-pipe-clk: if present, disable USB3 pipe_clk requirement.

				Used when dwc3 operates without SSPHY and only

				HS/FS/LS modes are supported.

Required child node:

A child node must exist to represent the core DWC3 IP block. The name of

the node is not important. The content of the node is defined in dwc3.txt.

Phy documentation is provided in the following places:

Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt    - USB3 QMP PHY

Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml - USB2 QUSB2 PHY

Example device nodes:

		hs_phy: phy@100f8800 {

			compatible = "qcom,qusb2-v2-phy";

			...

		};

		ss_phy: phy@100f8830 {

			compatible = "qcom,qmp-v3-usb3-phy";

			...

		};

		usb3_0: usb30@a6f8800 {

			compatible = "qcom,dwc3";

			reg = <0xa6f8800 0x400>;

			#address-cells = <1>;

			#size-cells = <1>;

			ranges;

			interrupts = <0 131 0>, <0 486 0>, <0 488 0>, <0 489 0>;

			interrupt-names = "hs_phy_irq", "ss_phy_irq",

				  "dm_hs_phy_irq", "dp_hs_phy_irq";

			clocks = <&gcc GCC_USB30_PRIM_MASTER_CLK>,

				<&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,

				<&gcc GCC_USB30_PRIM_SLEEP_CLK>;

			clock-names = "core", "mock_utmi", "sleep";

			assigned-clocks = <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,

					  <&gcc GCC_USB30_PRIM_MASTER_CLK>;

			assigned-clock-rates = <19200000>, <133000000>;

			resets = <&gcc GCC_USB30_PRIM_BCR>;

			reset-names = "core_reset";

			power-domains = <&gcc USB30_PRIM_GDSC>;

			qcom,select-utmi-as-pipe-clk;

			dwc3@10000000 {

				compatible = "snps,dwc3";

				reg = <0x10000000 0xcd00>;

				interrupts = <0 205 0x4>;

				phys = <&hs_phy>, <&ss_phy>;

				phy-names = "usb2-phy", "usb3-phy";

				dr_mode = "host";

			};

		};

# 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,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 ]

  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:

    maxItems: 2

    items:

      - description: Must be 19.2MHz (19200000).

      - description: Must be >= 60 MHz in HS mode, >= 125 MHz in SS mode.

  resets:

    maxItems: 1

  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"

  - power-domains

  - clocks

  - clock-names

examples:

  - |

    #include <dt-bindings/clock/qcom,gcc-sdm845.h>

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    #include <dt-bindings/interrupt-controller/irq.h>

    usb@a6f8800 {

        compatible = "qcom,sdm845-dwc3", "qcom,dwc3";

        reg = <0 0x0a6f8800 0 0x400>;

        #address-cells = <2>;

        #size-cells = <2>;

        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";

        };

    };