Jon Hunter wrote:

On 05/25/2012 05:42 AM, jgq516@gmail.com wrote:
  

quoted

From: Xiao Jiang <redacted>

Add wdt node to support dt.

Signed-off-by: Xiao Jiang <redacted>
---
 arch/arm/boot/dts/omap3.dtsi |    5 +++++
 arch/arm/boot/dts/omap4.dtsi |    5 +++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi
index 99474fa..039df5c 100644
--- a/arch/arm/boot/dts/omap3.dtsi
+++ b/arch/arm/boot/dts/omap3.dtsi

@@ -215,5 +215,10 @@
 			compatible = "ti,omap3-hsmmc";
 			ti,hwmods = "mmc3";
 		};
+
+		wdt: wdt@48314000{
    

Minor comment, may be call this wdt2 as this is watchdog timer 2. Also
ass a space between the address and the "{".

  

Ok, will change it to "wdt2: wdt@48314000 {".

quoted

+			compatible = "ti,omap3-wdt";
+			ti,hwmods = "wd_timer2";
+		};
 	};
 };

diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 359c497..d01403d 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi

@@ -272,5 +272,10 @@
 			ti,hwmods = "mmc5";
 			ti,needs-special-reset;
 		};
+
+		wdt: wdt@4a314000{
    

Same as above.

  

Ditto.

quoted

+			compatible = "ti,omap4-wdt";
+			ti,hwmods = "wd_timer2";
+		};
 	};
 };
    

Also we should add some documentation to describe the binding. Here it
is very simple, but nonetheless we should have something as we have for
gpio [1].

  

Thanks for reminding, how about below patch?

diff --git a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt 

b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
new file mode 100644
index 0000000..4272d06

--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt

@@ -0,0 +1,15 @@
+TI Watchdog Timer (WDT) Controller for OMAP
+
+Required properties:
+- compatible:
+  - "ti,omap2-wdt" for OMAP2
+  - "ti,omap3-wdt" for OMAP3
+  - "ti,omap4-wdt" for OMAP4
+- ti,hwmods: Name of the hwmod associated to the WDT
+
+Examples:
+
+wdt2: wdt@73f98000 {
+       compatible = "ti,omap4-wdt";
+       ti,hwmods = "wd_timer2";
+};

Regards,
Xiao

Cheers
Jon

[1]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/devicetree/bindings/gpio/gpio-omap.txt;h=bff51a2fee1eae7d387b40ea913e04782554bf68;hb=HEAD