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-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";
- };
- };
-