Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/Documentation/devicetree/bindings/usb/samsung-hsotg.txt b/kernel/Documentation/devicetree/bindings/usb/samsung-hsotg.txt
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+Samsung High Speed USB OTG controller
+-----------------------------
+
+The Samsung HSOTG IP can be found on Samsung SoCs, from S3C6400 onwards.
+It gives functionality of OTG-compliant USB 2.0 host and device with
+support for USB 2.0 high-speed (480Mbps) and full-speed (12 Mbps)
+operation.
+
+Currently only device mode is supported.
+
+Binding details
+-----
+
+Required properties:
+- compatible: "samsung,s3c6400-hsotg" should be used for all currently
+    supported SoC,
+- interrupt-parent: phandle for the interrupt controller to which the
+    interrupt signal of the HSOTG block is routed,
+- interrupts: specifier of interrupt signal of interrupt controller,
+    according to bindings of interrupt controller,
+- clocks: contains an array of clock specifiers:
+    - first entry: OTG clock
+- clock-names: contains array of clock names:
+    - first entry: must be "otg"
+- vusb_d-supply: phandle to voltage regulator of digital section,
+- vusb_a-supply: phandle to voltage regulator of analog section.
+
+Example
+-----
+
+       hsotg@12480000 {
+               compatible = "samsung,s3c6400-hsotg";
+               reg = <0x12480000 0x20000>;
+               interrupts = <0 71 0>;
+               clocks = <&clock 305>;
+               clock-names = "otg";
+               vusb_d-supply = <&vusb_reg>;
+               vusb_a-supply = <&vusbdac_reg>;
+       };
+