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Message-ID: <20230117014023.2993-2-allen-kh.cheng@mediatek.com>
Date: Tue, 17 Jan 2023 09:40:22 +0800
From: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
To: Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Rob Herring <robh+dt@...nel.org>,
<linux-watchdog@...r.kernel.org>
CC: <Project_Global_Chrome_Upstream_Group@...iatek.com>,
<devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>,
Allen-KH Cheng <allen-kh.cheng@...iatek.com>
Subject: [PATCH v3 1/2] dt-bindings: watchdog: mtk-wdt: Add reset-by-toprgu support
In some applications, the mtk-wdt requires the TOPRGU (Top Reset
Generation Unit) to reset timer after system resets. Add optional
mediatek,reset-by-toprgu property to enable it.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
.../devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml b/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml
index b3605608410c..55b34461df1b 100644
--- a/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml
@@ -52,6 +52,12 @@ properties:
description: Disable sending output reset signal
type: boolean
+ mediatek,reset-by-toprgu:
+ description: The Top Reset Generation Unit (TOPRGU) generates reset signals
+ and distributes them to each IP. If present, the watchdog timer will be
+ reset by TOPRGU once system resets.
+ type: boolean
+
'#reset-cells':
const: 1
--
2.18.0
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