This adds device tree binding documentation for the CPU watchdog found
on Armada 37xx SOCs (EspressoBin, Turris Mox).
Signed-off-by: Marek Behún <marek.behun@xxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
.../bindings/watchdog/armada-37xx-wdt.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
diff --git a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
new file mode 100644
index 000000000000..a8d00c31a1d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
@@ -0,0 +1,23 @@
+* Armada 37xx CPU Watchdog Timer Controller
+
+Required properties:
+- compatible : must be "marvell,armada-3700-wdt"
+- reg : base physical address of the controller and length of memory mapped
+ region.
+- clocks : the clock feeding the watchdog timer. See clock-bindings.txt
+- marvell,system-controller : reference to syscon node for the CPU Miscellaneous
+ Registers
+
+Example:
+
+ cpu_misc: system-controller@d000 {
+ compatible = "marvell,armada-3700-cpu-misc", "syscon";
+ reg = <0xd000 0x1000>;
+ };
+
+ wdt: watchdog@8300 {
+ compatible = "marvell,armada-3700-wdt";
+ reg = <0x8300 0x40>;
+ marvell,system-controller = <&cpu_misc>;
+ clocks = <&xtalclk>;
+ };
--
2.16.4
