Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/Documentation/devicetree/bindings/usb/generic.txt b/kernel/Documentation/devicetree/bindings/usb/generic.txt
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+Generic USB Properties
+
+Optional properties:
+ - maximum-speed: tells USB controllers we want to work up to a certain
+                       speed. Valid arguments are "super-speed", "high-speed",
+                       "full-speed" and "low-speed". In case this isn't passed
+                       via DT, USB controllers should default to their maximum
+                       HW capability.
+ - dr_mode: tells Dual-Role USB controllers that we want to work on a
+                       particular mode. Valid arguments are "host",
+                       "peripheral" and "otg". In case this attribute isn't
+                       passed via DT, USB DRD controllers should default to
+                       OTG.
+
+This is an attribute to a USB controller such as:
+
+dwc3@4a030000 {
+       compatible = "synopsys,dwc3";
+       reg = <0x4a030000 0xcfff>;
+       interrupts = <0 92 4>
+       usb-phy = <&usb2_phy>, <&usb3,phy>;
+       maximum-speed = "super-speed";
+       dr_mode = "otg";
+};