This patch aim at documenting USB related dt-bindings for the
Cadence USBSS-DRD controller.
Signed-off-by: Pawel Laszczak <pawell@xxxxxxxxxxx>
---
.../devicetree/bindings/usb/cdns-usb3.txt | 33 +++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/cdns-usb3.txt
diff --git a/Documentation/devicetree/bindings/usb/cdns-usb3.txt b/Documentation/devicetree/bindings/usb/cdns-usb3.txt
new file mode 100644
index 000000000000..6dc38be77f5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/cdns-usb3.txt
@@ -0,0 +1,33 @@
+Binding for the Cadence USBSS-DRD controller
+
+Required properties:
+ - reg: Physical base address and size of the controller's register areas.
+ Controller has 3 different regions:
+ region 1 - HOST registers area
+ region 2 - DEVICE registers area
+ region 3 - OTG/DRD registers area
+ - reg-names - register memory area names:
+ "xhci" - for HOST registers space
+ "dev" - for DEVICE registers space
+ "otg" - for OTG/DRD registers space
+ - compatible: Should contain: "cdns,usb3-1.0.0" or "cdns,usb3-1.0.1"
+ - interrupts: Interrupt specifier. Refer to interrupt bindings.
+ Driver supports only single interrupt line.
+ This single interrupt is shared between Device,
+ host and OTG/DRD part of driver.
+
+Optional properties:
+ - maximum-speed : valid arguments are "super-speed", "high-speed" and
+ "full-speed"; refer to usb/generic.txt
+ - dr_mode: Should be one of "host", "peripheral" or "otg".
+ - phys: reference to the USB PHY
+
+Example:
+ usb@f3000000 {
+ compatible = "cdns,usb3";
+ interrupts = <USB_IRQ 7 IRQ_TYPE_LEVEL_HIGH>;
+ reg = <0xf3000000 0x10000 /* memory area for HOST registers */
+ 0xf3010000 0x10000 /* memory area for DEVICE registers */
+ 0xf3020000 0x10000>; /* memory area for OTG/DRD registers */
+ reg-names = "xhci", "dev", "otg";
+ };
--
2.17.1
