[PATCH] serial: vt8500: Add missing binding document for arch-vt8500 serial driver.

[Tony Prisk]

The binding document for the vt8500/wm8xxx SoC UART driver is missing.
This patch adds the binding document.

Signed-off-by: Tony Prisk <linux at prisktech.co.nz>
---
 .../devicetree/bindings/serial/vt8500-uart.txt     |   26 ++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/vt8500-uart.txt

diff --git a/Documentation/devicetree/bindings/serial/vt8500-uart.txt b/Documentation/devicetree/bindings/serial/vt8500-uart.txt
new file mode 100644
index 0000000..795c393
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/vt8500-uart.txt
@@ -0,0 +1,26 @@
+* VIA VT8500 and WonderMedia WM8xxx UART Controller
+
+Required properties:
+- compatible: should be "via,vt8500-uart"
+
+- reg: base physical address of the controller and length of memory mapped
+	region.
+
+- interrupts: hardware interrupt number
+
+- clocks: shall be the input parent clock phandle for the clock. This should
+	be the 24Mhz reference clock.
+
+Aliases may be defined to ensure the correct ordering of the uarts.
+
+Example:
+	aliases {
+		serial0 = &uart0;
+	};
+
+	uart0: serial at d8200000 {
+		compatible = "via,vt8500-uart";
+		reg = <0xd8200000 0x1040>;
+		interrupts = <32>;
+		clocks = <&clkuart0>;
+	};
-- 
1.7.9.5