linux-kernel - [PATCH v2 1/2] dt-bindings: watchdog: mtk-wdt: Add reset-by-toprgu support

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Message-ID: <20230116105305.31818-2-allen-kh.cheng@mediatek.com>
Date:   Mon, 16 Jan 2023 18:53:04 +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 v2 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>
---
 .../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..b4de6b134ce1 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 generate unit (toprgu) generates reset signals
+      and distributes them to each system. If present, means the watchdog
+      timer will reset by toprgu once system resets.
+    type: boolean
+
   '#reset-cells':
     const: 1
 
-- 
2.18.0