Kernel-4.18.0-80.el8_keystone-usb

TI Keystone Soc USB Controller

DWC3 GLUE

Required properties:

• compatible: should be “ti,keystone-dwc3”.
• #address-cells, #size-cells : should be ‘1’ if the device has sub-nodes
  with ‘reg’ property.
• reg : Address and length of the register set for the USB subsystem on
  the SOC.
• interrupts : The irq number of this device that is used to interrupt the
  MPU.
• ranges: allows valid 1:1 translation between child’s address space and
  parent’s address space.

SoC-specific Required Properties:
The following are mandatory properties for Keystone 2 66AK2HK, 66AK2L and 66AK2E
SoCs only:

• clocks: Clock ID for USB functional clock.
• clock-names: Must be “usb”.

The following are mandatory properties for Keystone 2 66AK2G SoCs only:

• power-domains: Should contain a phandle to a PM domain provider node

        and an args specifier containing the USB device id
        value. This property is as per the binding,
        Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  

Sub-nodes:
The dwc3 core should be added as subnode to Keystone DWC3 glue.

• dwc3 :
  The binding details of dwc3 can be found in:
  Documentation/devicetree/bindings/usb/dwc3.txt

Example:
usb: usb@2680000 {
compatible = “ti,keystone-dwc3”;
#address-cells = <1>;
#size-cells = <1>;
reg = <0x2680000 0x10000>;
clocks = <&clkusb>;
clock-names = “usb”;
interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;
ranges;

    dwc3@2690000 {
        compatible = "synopsys,dwc3";
        reg = <0x2690000 0x70000>;
        interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;
        usb-phy = <&usb_phy>, <&usb_phy>;
    };
};