This adds device tree bindings for the PXA25x USB Device
Controller as found in the PXA25x and the IXP4xx.

Cc: Robert Jarzmik <robert.jarz...@free.fr>
Cc: devicet...@vger.kernel.org
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
 .../devicetree/bindings/usb/pxa25x-udc.txt    | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/pxa25x-udc.txt

diff --git a/Documentation/devicetree/bindings/usb/pxa25x-udc.txt 
b/Documentation/devicetree/bindings/usb/pxa25x-udc.txt
new file mode 100644
index 000000000000..bbdbe0df3565
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/pxa25x-udc.txt
@@ -0,0 +1,27 @@
+PXA25x UDC (USB Device Controller)
+
+The PXA25x and IXP4xx USB Device Controller is different from the
+PXA27x UDC described in pxa-usb.txt and is compatible between the
+Marvell PXA25x and the Intel IXP4xx devices.
+
+Required properties:
+ - compatible: Should be one of
+   "marvell,pxa25x-udc"
+   "intel,ixp4xx-udc"
+   for USB controllers used in device mode.
+ - reg: usb device MMIO address space
+ - interrupts: single interrupt generated by the UDC IP
+ - clocks: input clock of the UDC IP (see clock-bindings.txt)
+
+Optional properties:
+ - gpios:
+   - gpio activated to control the USB D+ pullup (see gpio.txt)
+
+Example:
+
+usb@c800b000 {
+       compatible = "intel,ixp4xx-udc";
+       reg = <0xc800b000 0x1000>;
+       interrupts = <12 IRQ_TYPE_LEVEL_HIGH>;
+       clocks = <&pclk 0>;
+};
-- 
2.20.1

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