Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / usb / keystone-usb.txt

diff --git a/kernel/Documentation/devicetree/bindings/usb/keystone-usb.txt b/kernel/Documentation/devicetree/bindings/usb/keystone-usb.txt
new file mode 100644 (file)
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+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>;
+               };
+       };