Kernel-4.18.0-80.el8_samsung-hsotg

Samsung High Speed USB OTG controller

The Samsung HSOTG IP can be found on Samsung SoCs, from S3C6400 onwards.
It gives functionality of OTG-compliant USB 2.0 host and device with
support for USB 2.0 high-speed (480Mbps) and full-speed (12 Mbps)
operation.

Currently only device mode is supported.

Binding details

Required properties:

• compatible: “samsung,s3c6400-hsotg” should be used for all currently
  supported SoC,
• interrupt-parent: phandle for the interrupt controller to which the
  interrupt signal of the HSOTG block is routed,
• interrupts: specifier of interrupt signal of interrupt controller,
  according to bindings of interrupt controller,
• clocks: contains an array of clock specifiers:
  • first entry: OTG clock
• clock-names: contains array of clock names:
  • first entry: must be “otg”
• vusb_d-supply: phandle to voltage regulator of digital section,
• vusb_a-supply: phandle to voltage regulator of analog section.

Example

hsotg@12480000 {
    compatible = "samsung,s3c6400-hsotg";
    reg = <0x12480000 0x20000>;
    interrupts = <0 71 0>;
    clocks = <&clock 305>;
    clock-names = "otg";
    vusb_d-supply = <&vusb_reg>;
    vusb_a-supply = <&vusbdac_reg>;
};