serial: add device tree binding documentation for ETRAX FS UART

Signed-off-by: Niklas Cassel <nks@flawful.org>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt b/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
new file mode 100644 (file)
index 0000000..ebcbb62
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
@@ -0,0 +1,19 @@
+ETRAX FS UART
+
+Required properties:
+- compatible : "axis,etraxfs-uart"
+- reg: offset and length of the register set for the device.
+- interrupts: device interrupt
+
+Optional properties:
+- {dtr,dsr,ri,cd}-gpios: specify a GPIO for DTR/DSR/RI/CD
+  line respectively.
+
+Example:
+
+serial@b00260000 {
+       compatible = "axis,etraxfs-uart";
+       reg = <0xb0026000 0x1000>;
+       interrupts = <68>;
+       status = "disabled";
+};

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index db0e94f..fae26d0 100644 (file)
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -28,6 +28,7 @@ atmel Atmel Corporation
 auo    AU Optronics Corporation
 avago  Avago Technologies
 avic   Shanghai AVIC Optoelectronics Co., Ltd.
+axis   Axis Communications AB
 bosch  Bosch Sensortec GmbH
 brcm   Broadcom Corporation
 buffalo        Buffalo, Inc.