DT: watchdog: Add ImgTec PDC Watchdog Timer binding documentation

Add the devicetree binding document for ImgTec PDC Watchdog Timer. Reviewed-by: Andrew Bresticker <[email protected]> Signed-off-by: Naidu Tellapati <[email protected]> Signed-off-by: Jude Abraham <[email protected]> Signed-off-by: Ezequiel Garcia <[email protected]> Reviewed-by: Guenter Roeck <[email protected]> Signed-off-by: Wim Van Sebroeck <[email protected]>
chewitt · Feb 17, 2015 · 1888e7a · 1888e7a
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commit 1888e7a
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diff --git a/Documentation/devicetree/bindings/watchdog/imgpdc-wdt.txt b/Documentation/devicetree/bindings/watchdog/imgpdc-wdt.txt
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+*ImgTec PowerDown Controller (PDC) Watchdog Timer (WDT)
+
+Required properties:
+- compatible : Should be "img,pdc-wdt"
+- reg : Should contain WDT registers location and length
+- clocks: Must contain an entry for each entry in clock-names.
+- clock-names: Should contain "wdt" and "sys"; the watchdog counter
+               clock and register interface clock respectively.
+- interrupts : Should contain WDT interrupt
+
+Examples:
+
+watchdog@18102100 {
+	compatible = "img,pdc-wdt";
+	reg = <0x18102100 0x100>;
+	clocks = <&pdc_wdt_clk>, <&sys_clk>;
+	clock-names = "wdt", "sys";
+	interrupts = <0 52 IRQ_TYPE_LEVEL_HIGH>;
+};