arm/dts: add wdt node for omap3 and omap4

Add wdt node to support dt.

Signed-off-by: Xiao Jiang <jgq516@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
new file mode 100644 (file)
index 0000000..c227970
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
@@ -0,0 +1,14 @@
+TI Watchdog Timer (WDT) Controller for OMAP
+
+Required properties:
+compatible:
+- "ti,omap3-wdt" for OMAP3
+- "ti,omap4-wdt" for OMAP4
+- ti,hwmods: Name of the hwmod associated to the WDT
+
+Examples:
+
+wdt2: wdt@4a314000 {
+       compatible = "ti,omap4-wdt", "ti,omap3-wdt";
+       ti,hwmods = "wd_timer2";
+};

diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi
index 99474fa..8109471 100644 (file)
--- 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";
                };
+
+               wdt2: wdt@48314000 {
+                       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..3664641 100644 (file)
--- 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;
                };
+
+               wdt2: wdt@4a314000 {
+                       compatible = "ti,omap4-wdt", "ti,omap3-wdt";
+                       ti,hwmods = "wd_timer2";
+               };
        };
 };