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Commit 73207956 authored by WingMan Kwok's avatar WingMan Kwok Committed by Santosh Shilimkar
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ARM: dts: keystone: Add usb devicetree bindings 



Added device tree support for TI's Keystone USB driver and updated the
Documentation with device tree binding information.

Signed-off-by: default avatarWingMan Kwok <w-kwok2@ti.com>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
parent 08c36762

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

0 → 100644
+42 −0
Original line number Diff line number Diff line 
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.

 - clocks: Clock IDs array as required by the controller.

 - clock-names: names of clocks correseponding to IDs in the clock property.



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;

		status = "disabled";



		dwc3@2690000 {

			compatible = "synopsys,dwc3";

			reg = <0x2690000 0x70000>;

			interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;

			usb-phy = <&usb_phy>, <&usb_phy>;

		};

	};

arch/arm/boot/dts/k2hk-evm.dts

+8 −0
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@@ -53,3 +53,11 @@ 
		};

	};

};



&usb_phy {

	status = "okay";

};



&usb {

	status = "okay";

};

arch/arm/boot/dts/keystone.dtsi

+19 −0
Original line number Diff line number Diff line
@@ -189,5 +189,24 @@ 
			reg = <0x2620738 32>;

			status = "disabled";

		};



		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;

			status = "disabled";



			dwc3@2690000 {

				compatible = "synopsys,dwc3";

				reg = <0x2690000 0x70000>;

				interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;

				usb-phy = <&usb_phy>, <&usb_phy>;

			};

		};

	};

};