Kernel-4.18.0-80.el8_atmel-usb

Atmel SOC USB controllers

OHCI

Required properties:

• compatible: Should be “atmel,at91rm9200-ohci” for USB controllers
  used in host mode.
• reg: Address and length of the register set for the device
• interrupts: Should contain ohci interrupt
• clocks: Should reference the peripheral, host and system clocks
• clock-names: Should contain three strings

   "ohci_clk" for the peripheral clock
   "hclk" for the host clock
   "uhpck" for the system clock
  

• num-ports: Number of ports.
• atmel,vbus-gpio: If present, specifies a gpio that needs to be
  activated for the bus to be powered.
• atmel,oc-gpio: If present, specifies a gpio that needs to be
  activated for the overcurrent detection.

usb0: ohci@500000 {
compatible = “atmel,at91rm9200-ohci”, “usb-ohci”;
reg = <0x00500000 0x100000>;
clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
clock-names = “ohci_clk”, “hclk”, “uhpck”;
interrupts = <20 4>;
num-ports = <2>;
};

EHCI

Required properties:

• compatible: Should be “atmel,at91sam9g45-ehci” for USB controllers
  used in host mode.
• reg: Address and length of the register set for the device
• interrupts: Should contain ehci interrupt
• clocks: Should reference the peripheral and the UTMI clocks
• clock-names: Should contain two strings

   "ehci_clk" for the peripheral clock
   "usb_clk" for the UTMI clock
  

usb1: ehci@800000 {
compatible = “atmel,at91sam9g45-ehci”, “usb-ehci”;
reg = <0x00800000 0x100000>;
interrupts = <22 4>;
clocks = <&utmi>, <&uhphs_clk>;
clock-names = “usb_clk”, “ehci_clk”;
};

AT91 USB device controller

Required properties:

• compatible: Should be one of the following

      "atmel,at91rm9200-udc"
      "atmel,at91sam9260-udc"
      "atmel,at91sam9261-udc"
      "atmel,at91sam9263-udc"
  

• reg: Address and length of the register set for the device
• interrupts: Should contain macb interrupt
• clocks: Should reference the peripheral and the AHB clocks
• clock-names: Should contain two strings

   "pclk" for the peripheral clock
   "hclk" for the AHB clock
  

Optional properties:

• atmel,vbus-gpio: If present, specifies a gpio that needs to be
  activated for the bus to be powered.

usb1: gadget@fffa4000 {
compatible = “atmel,at91rm9200-udc”;
reg = <0xfffa4000 0x4000>;
interrupts = <10 4>;
clocks = <&udc_clk>, <&udpck>;
clock-names = “pclk”, “hclk”;
atmel,vbus-gpio = <&pioC 5 0>;
};

Atmel High-Speed USB device controller

Required properties:

• compatible: Should be one of the following

      "atmel,at91sam9rl-udc"
      "atmel,at91sam9g45-udc"
      "atmel,sama5d3-udc"
  

• reg: Address and length of the register set for the device
• interrupts: Should contain usba interrupt
• clocks: Should reference the peripheral and host clocks
• clock-names: Should contain two strings

   "pclk" for the peripheral clock
   "hclk" for the host clock
  

• ep childnode: To specify the number of endpoints and their properties.

Optional properties:

• atmel,vbus-gpio: If present, specifies a gpio that allows to detect whether
  vbus is present (USB is connected).

Required child node properties:

• name: Name of the endpoint.
• reg: Num of the endpoint.
• atmel,fifo-size: Size of the fifo.
• atmel,nb-banks: Number of banks.
• atmel,can-dma: Boolean to specify if the endpoint support DMA.
• atmel,can-isoc: Boolean to specify if the endpoint support ISOC.

usb2: gadget@fff78000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = “atmel,at91sam9rl-udc”;
reg = <0x00600000 0x80000
0xfff78000 0x400>;
interrupts = <27 4 0>;
clocks = <&utmi>, <&udphs_clk>;
clock-names = “hclk”, “pclk”;
atmel,vbus-gpio = <&pioB 19 0>;

ep@0 {
    reg = <0>;
    atmel,fifo-size = <64>;
    atmel,nb-banks = <1>;
};

ep@1 {
    reg = <1>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <2>;
    atmel,can-dma;
    atmel,can-isoc;
};

ep@2 {
    reg = <2>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <2>;
    atmel,can-dma;
    atmel,can-isoc;
};

ep@3 {
    reg = <3>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <3>;
    atmel,can-dma;
};

ep@4 {
    reg = <4>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <3>;
    atmel,can-dma;
};

ep@5 {
    reg = <5>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <3>;
    atmel,can-dma;
    atmel,can-isoc;
};

ep@6 {
    reg = <6>;
    atmel,fifo-size = <1024>;
    atmel,nb-banks = <3>;
    atmel,can-dma;
    atmel,can-isoc;
};

};