From 5f8ebd4766dd072c8152255d45b352d444592a33 Mon Sep 17 00:00:00 2001 From: Wang Qing Date: Sun, 25 Apr 2021 09:52:07 +0800 Subject: doc: mtk-wdt: support pre-timeout when the bark irq is available Add description of pre-timeout in mtk-wdt. Signed-off-by: Wang Qing Acked-by: Rob Herring Link: https://lore.kernel.org/r/1619148020-2236-3-git-send-email-wangqing@vivo.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- Documentation/devicetree/bindings/watchdog/mtk-wdt.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt index e36ba60de829..8e277778f923 100644 --- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt @@ -1,5 +1,8 @@ Mediatek SoCs Watchdog timer +The watchdog supports a pre-timeout interrupt that fires timeout-sec/2 +before the expiry. + Required properties: - compatible should contain: @@ -17,6 +20,7 @@ Required properties: - reg : Specifies base physical address and size of the registers. Optional properties: +- interrupts: Watchdog pre-timeout (bark) interrupt. - timeout-sec: contains the watchdog timeout in seconds. - #reset-cells: Should be 1. @@ -26,6 +30,7 @@ watchdog: watchdog@10007000 { compatible = "mediatek,mt8183-wdt", "mediatek,mt6589-wdt"; reg = <0 0x10007000 0 0x100>; + interrupts = ; timeout-sec = <10>; #reset-cells = <1>; }; -- cgit