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ARM: dts: keystone: Add usb devicetree bindings

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

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
WingMan Kwok 2013-12-09 17:25:12 -05:00 • committed by Santosh Shilimkar
parent 08c36762db
commit 732079567d
3 changed files with 69 additions and 0 deletions
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42
Documentation/devicetree/bindings/usb/keystone-usb.txt Normal file
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@ -0,0 +1,42 @@
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>;
};
};

8
arch/arm/boot/dts/k2hk-evm.dts
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@ -53,3 +53,11 @@
}; };
}; };
}; };
&usb_phy {
status = "okay";
};
&usb {
status = "okay";
};

19
arch/arm/boot/dts/keystone.dtsi
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@ -189,5 +189,24 @@
reg = <0x2620738 32>; reg = <0x2620738 32>;
status = "disabled"; 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>;
};
};
}; };
}; };