watchdog: add DT bindings for Cortina Gemini

This adds DT bindings for the Cortina systems Gemini SoC
watchdog timer.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/Documentation/devicetree/bindings/watchdog/cortina,gemin-watchdog.txt b/Documentation/devicetree/bindings/watchdog/cortina,gemin-watchdog.txt
new file mode 100644 (file)
index 0000000..bc4b865
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/cortina,gemin-watchdog.txt
@@ -0,0 +1,17 @@
+Cortina Systems Gemini SoC Watchdog
+
+Required properties:
+- compatible : must be "cortina,gemini-watchdog"
+- reg : shall contain base register location and length
+- interrupts : shall contain the interrupt for the watchdog
+
+Optional properties:
+- timeout-sec : the default watchdog timeout in seconds.
+
+Example:
+
+watchdog@41000000 {
+       compatible = "cortina,gemini-watchdog";
+       reg = <0x41000000 0x1000>;
+       interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+};