linux-kernel - [PATCH v3] arm64: dts: imx8qm: add system controller watchdog support

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Message-Id: <20250609-imx8qm-watchdog-v3-1-5c22618606c8@bootlin.com>
Date: Mon, 09 Jun 2025 14:02:34 +0200
From: Thomas Richard <thomas.richard@...tlin.com>
To: Wim Van Sebroeck <wim@...ux-watchdog.org>, 
 Guenter Roeck <linux@...ck-us.net>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Dong Aisheng <aisheng.dong@....com>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, 
 Oliver Graute <oliver.graute@...oconnector.com>, 
 Frank Li <Frank.Li@....com>, Thomas Richard <thomas.richard@...tlin.com>
Subject: [PATCH v3] arm64: dts: imx8qm: add system controller watchdog
 support

Add system controller watchdog support for i.MX8QM.

Acked-by: Oliver Graute <oliver.graute@...oconnector.com>
Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Thomas Richard <thomas.richard@...tlin.com>
---
Third version of this series. I just rebased it on v6.16-rc1, dropped the
binding patch (already applied upstream) and took RB/AB tags for the
devicetree patch.
---
Changes in v3:
- all: rebase on v6.16-rc1
- bindings: remove patch
- devicetree: take "Acked-by: Oliver Graute <oliver.graute@...oconnector.com>"
- devicetree: take "Reviewed-by: Frank Li <Frank.Li@....com>"
- Link to v2: https://lore.kernel.org/r/20250414-imx8qm-watchdog-v2-0-449265a9da4e@bootlin.com

Changes in v2:
- bindings: take "Acked-by: Rob Herring (Arm) <robh@...nel.org>"
- bindings: take "Reviewed-by: Frank Li <Frank.Li@....com>"
- devicetree: move the watchdog node just after thermal-sensor
- Link to v1: https://lore.kernel.org/r/20250407-imx8qm-watchdog-v1-0-20c219b15fd2@bootlin.com
---
 arch/arm64/boot/dts/freescale/imx8qm.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
index 6fa31bc9ece8..11527050ac8b 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
@@ -356,6 +356,11 @@ tsens: thermal-sensor {
 			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
 			#thermal-sensor-cells = <1>;
 		};
+
+		watchdog {
+			compatible = "fsl,imx8qm-sc-wdt", "fsl,imx-sc-wdt";
+			timeout-sec = <60>;
+		};
 	};
 
 	thermal-zones {

---
base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
change-id: 20250203-imx8qm-watchdog-b8363342842e

Best regards,
-- 
Thomas Richard <thomas.richard@...tlin.com>