Adds bindings documentation for the max3421 driver.
Signed-off-by: Jules Maselbas <jules.maselbas@xxxxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/usb/maxim,max3421.txt | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/maxim,max3421.txt
diff --git a/Documentation/devicetree/bindings/usb/maxim,max3421.txt b/Documentation/devicetree/bindings/usb/maxim,max3421.txt
new file mode 100644
index 000000000000..5c699e52ce3f
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/maxim,max3421.txt
@@ -0,0 +1,25 @@
+Maxim Integrated SPI-based USB 2.0 host controller MAX3421E
+
+Required properties:
+ - compatible: Should be "maxim,max3421"
+ - spi-max-frequency: maximum frequency for this device must not exceed 26 MHz.
+ - reg: chip select number to which this device is connected.
+ - maxim,vbus-en-pin: <GPOUTx ACTIVE_LEVEL>
+ GPOUTx is the number (1-8) of the GPOUT pin of MAX3421E to drive Vbus.
+ ACTIVE_LEVEL is 0 or 1.
+ - interrupts: the interrupt line description for the interrupt controller.
+ The driver configures MAX3421E for active low level triggered interrupts,
+ configure your interrupt line accordingly.
+
+Optional property:
+ - interrupt-parent: the phandle to the associated interrupt controller.
+
+Example:
+ usb@0 {
+ compatible = "maxim,max3421";
+ reg = <0>;
+ maxim,vbus-en-pin = <3 1>;
+ spi-max-frequency = <26000000>;
+ interrupt-parent = <&PIC>;
+ interrupts = <42>;
+ };
--
2.14.2
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