Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/Documentation/devicetree/bindings/usb/usb-ehci.txt b/kernel/Documentation/devicetree/bindings/usb/usb-ehci.txt
new file mode 100644 (file)
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+++ b/kernel/Documentation/devicetree/bindings/usb/usb-ehci.txt
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+USB EHCI controllers
+
+Required properties:
+  - compatible : should be "generic-ehci".
+  - reg : should contain at least address and length of the standard EHCI
+    register set for the device. Optional platform-dependent registers
+    (debug-port or other) can be also specified here, but only after
+    definition of standard EHCI registers.
+  - interrupts : one EHCI interrupt should be described here.
+
+Optional properties:
+ - big-endian-regs : boolean, set this for hcds with big-endian registers
+ - big-endian-desc : boolean, set this for hcds with big-endian descriptors
+ - big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
+ - needs-reset-on-resume : boolean, set this to force EHCI reset after resume
+ - clocks : a list of phandle + clock specifier pairs
+ - phys : phandle + phy specifier pair
+ - phy-names : "usb"
+ - resets : phandle + reset specifier pair
+
+Example (Sequoia 440EPx):
+    ehci@e0000300 {
+          compatible = "ibm,usb-ehci-440epx", "usb-ehci";
+          interrupt-parent = <&UIC0>;
+          interrupts = <1a 4>;
+          reg = <0 e0000300 90 0 e0000390 70>;
+          big-endian;
+   };
+
+Example (Allwinner sun4i A10 SoC):
+   ehci0: usb@01c14000 {
+          compatible = "allwinner,sun4i-a10-ehci", "generic-ehci";
+          reg = <0x01c14000 0x100>;
+          interrupts = <39>;
+          clocks = <&ahb_gates 1>;
+          phys = <&usbphy 1>;
+          phy-names = "usb";
+   };