Commit 73d4839a authored by Charan Pedumuru's avatar Charan Pedumuru Committed by Greg Kroah-Hartman
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dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support 



Convert the Atmel AT91RM9200 OHCI USB host controller binding to DT schema
by defining it in the existing generic OHCI schema.

Signed-off-by: default avatarCharan Pedumuru <charan.pedumuru@gmail.com>
Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260327-atmel-usb-v4-2-eb8b6e49b29d@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2b7f1a4f

Documentation/devicetree/bindings/usb/atmel-usb.txt

+0 −27
Original line number Diff line number Diff line 
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:

Documentation/devicetree/bindings/usb/generic-ohci.yaml

+41 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ properties: 
          - ti,ohci-omap3

      - items:

          - enum:

              - atmel,at91rm9200-ohci

              - cavium,octeon-6335-ohci

              - nintendo,hollywood-usb-ohci

              - nxp,ohci-nxp
@@ -137,6 +138,24 @@ properties: 
      The associated ISP1301 device. Necessary for the UDC controller for

      connecting to the USB physical layer.



  atmel,vbus-gpio:

    description:

      GPIO used to control or sense the USB VBUS power. Each entry

      represents a VBUS-related GPIO; count and order may vary by hardware.

      Entries follow standard GPIO specifier format. A value of 0 indicates

      an unused or unavailable VBUS signal.

    minItems: 1

    maxItems: 3



  atmel,oc-gpio:

    description:

      GPIO used to signal USB overcurrent condition. Each entry represents

      an OC detection GPIO; count and order may vary by hardware. Entries

      follow standard GPIO specifier format. A value of 0 indicates an

      unused or unavailable OC signal.

    minItems: 1

    maxItems: 3



required:

  - compatible

  - reg
@@ -144,6 +163,28 @@ required: 


allOf:

  - $ref: usb-hcd.yaml

  - if:

      properties:

        compatible:

          contains:

            const: atmel,at91rm9200-ohci

    then:

      properties:

        clock-names:

          items:

            - const: ohci_clk

            - const: hclk

            - const: uhpck



      required:

        - clocks

        - clock-names



    else:

      properties:

        atmel,vbus-gpio: false

        atmel,oc-gpio: false



  - if:

      not:

        properties: