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dt-bindings: watchdog: mtk-wdt: Add reset-by-toprgu support

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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@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230117014023.2993-2-allen-kh.cheng@mediatek.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Allen-KH Cheng 2023-01-17 09:40:22 +08:00 committed by Wim Van Sebroeck
parent d2d11f342b
commit 9b30eac1b3
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml
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@ -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