linux-kernel - [PATCH v4 2/2] devicetree: Add Cadence WDT devicetree bindings documentation

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Message-Id: <1406788855-19074-2-git-send-email-harinik@xilinx.com>
Date:	Thu, 31 Jul 2014 12:10:55 +0530
From:	Harini Katakam <harinik@...inx.com>
To:	wim@...ana.be, grant.likely@...aro.org, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	rob@...dley.net
Cc:	michals@...inx.com, linux-watchdog@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org, harinikatakamlinux@...il.com,
	svemula@...inx.com, anirudh@...inx.com,
	Harini Katakam <harinik@...inx.com>
Subject: [PATCH v4 2/2] devicetree: Add Cadence WDT devicetree bindings documentation

Add cadence-wdt bindings documentation.

Signed-off-by: Harini Katakam <harinik@...inx.com>
---

v4 changes:
- Change name of property "reset" to "reset-on-timeout".
- Use cdns compatible string in example.
- Improve description of clocks and interrupts.

v3 changes:
- Change reset property type and improve description.
- Improve description of clocks and interrupts.
- Use watchdog@ in the example.
- Use only cdns compatible string for now.

v2:
No changes

---
 .../devicetree/bindings/watchdog/cadence-wdt.txt   |   24 ++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/cadence-wdt.txt

diff --git a/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
new file mode 100644
index 0000000..c3a36ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
@@ -0,0 +1,24 @@
+Zynq Watchdog Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- compatible		: Should be "cdns,wdt-r1p2".
+- clocks		: This is pclk (APB clock).
+- interrupts		: This is wd_irq - watchdog timeout interrupt.
+- interrupt-parent	: Must be core interrupt controller.
+
+Optional properties
+- reset-on-timeout	: If this property exists, then a reset is done
+			  when watchdog times out.
+- timeout-sec		: Watchdog timeout value (in seconds).
+
+Example:
+	watchdog@...05000 {
+		compatible = "cdns,wdt-r1p2";
+		clocks = <&clkc 45>;
+		interrupt-parent = <&intc>;
+		interrupts = <0 9 1>;
+		reg = <0xf8005000 0x1000>;
+		reset-on-timeout;
+		timeout-sec = <10>;
+	};
-- 
1.7.9.5

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