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dt-bindings: watchdog: Document armada-37xx-wdt binding

Message ID 20180902195952.627-1-marek.behun@nic.cz
State Superseded, archived
Headers show
Series dt-bindings: watchdog: Document armada-37xx-wdt binding | expand

Commit Message

Marek Behún Sept. 2, 2018, 7:59 p.m. UTC 
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@nic.cz>
---
 .../bindings/watchdog/armada-37xx-wdt.txt          | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt

Comments

Marek Behún Sept. 2, 2018, 8:02 p.m. UTC | #1 
Could someone from devicetree please review this?
Thanks.

Marek
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Patch

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..4ba9e40ad386
--- /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 = "syscon", "simple-mfd";
+		reg = <0xd000 0x1000>;
+	};
+
+	wdt: watchdog-timer@8300 {
+		compatible = "marvell,armada-3700-wdt";
+		reg = <0x8300 0x40>;
+		marvell,system-controller = <&cpu_misc>;
+		clocks = <&xtalclk>;
+	};