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-rw-r--r--Documentation/devicetree/bindings/watchdog/mtk-wdt.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
index e36ba60de829..a4e31ce96e0e 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:
@@ -10,13 +13,16 @@ Required properties:
"mediatek,mt7622-wdt", "mediatek,mt6589-wdt": for MT7622
"mediatek,mt7623-wdt", "mediatek,mt6589-wdt": for MT7623
"mediatek,mt7629-wdt", "mediatek,mt6589-wdt": for MT7629
+ "mediatek,mt7986-wdt", "mediatek,mt6589-wdt": for MT7986
"mediatek,mt8183-wdt": for MT8183
"mediatek,mt8516-wdt", "mediatek,mt6589-wdt": for MT8516
"mediatek,mt8192-wdt": for MT8192
+ "mediatek,mt8195-wdt", "mediatek,mt6589-wdt": for MT8195
- 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 +32,7 @@ watchdog: watchdog@10007000 {
compatible = "mediatek,mt8183-wdt",
"mediatek,mt6589-wdt";
reg = <0 0x10007000 0 0x100>;
+ interrupts = <GIC_SPI 139 IRQ_TYPE_NONE>;
timeout-sec = <10>;
#reset-cells = <1>;
};