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From: Antonio Borneo <antonio.borneo@foss.st.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Russell King <linux@armlinux.org.uk>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Guenter Roeck <linux@roeck-us.net>, <devicetree@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Cc: "Antonio Borneo" <antonio.borneo@foss.st.com>,
	linux-watchdog@vger.kernel.org,
	"Clément Le Goffic" <clement.legoffic@foss.st.com>,
	"Amelie Delaunay" <amelie.delaunay@foss.st.com>
Subject: [PATCH v3 07/13] ARM: dts: stm32: move arm smc watchdog to stm32mp151 SoC
Date: Fri, 6 Nov 2026 17:34:23 +0100	[thread overview]
Message-ID: <20261106163429.618392-8-antonio.borneo@foss.st.com> (raw)
In-Reply-To: <20261106163429.618392-1-antonio.borneo@foss.st.com>

On boards where IWDG1 is secure and monitored by OP-TEE, Linux
must control the watchdog through SMC calls.

Move the arm,smc-wdt node to the STM32MP151 SoC device tree so
that board device trees can enable it as needed.

Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
---
 arch/arm/boot/dts/st/stm32mp151.dtsi           | 6 ++++++
 arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi | 7 -------
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/arm/boot/dts/st/stm32mp151.dtsi b/arch/arm/boot/dts/st/stm32mp151.dtsi
index e71b2ab58aa54..d00a36a8c93ba 100644
--- a/arch/arm/boot/dts/st/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp151.dtsi
@@ -31,6 +31,12 @@ arm-pmu {
 		interrupt-parent = <&intc>;
 	};
 
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		status = "disabled";
+	};
+
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";
diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi b/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
index 172347769e025..27ea5e79efc66 100644
--- a/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
@@ -13,13 +13,6 @@ optee@de000000 {
 			no-map;
 		};
 	};
-
-	arm_wdt: watchdog {
-		compatible = "arm,smc-wdt";
-		arm,smc-id = <0xbc000000>;
-		status = "disabled";
-	};
-
 };
 
 &adc {
-- 
2.34.1


  parent reply	other threads:[~2026-11-06 16:34 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-06 16:34 [PATCH v3 00/13] Update watchdogs support on STM32MP platforms Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 01/13] watchdog: stm32_iwdg: get hardware version during probe Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 02/13] watchdog: stm32_iwdg: detect whether the watchdog is running Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 03/13] watchdog: stm32_iwdg: add pretimeout support for iwdg v4.0 Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 04/13] ARM: stm32: enable arm smc watchdog on stm32mp1xx Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 05/13] ARM: dts: stm32: add iwdg1 node on stm32mp151 SoC Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 06/13] ARM: dts: stm32: enable iwdg1 on stm32mp15x ST boards Antonio Borneo
2026-11-06 16:34 ` Antonio Borneo [this message]
2026-11-06 16:34 ` [PATCH v3 08/13] ARM: dts: stm32: enable arm smc watchdog on stm32mp15x scmi boards Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 09/13] ARM: dts: stm32: add watchdog0 alias on ST stm32mp1xx boards Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 10/13] arm64: dts: st: add iwdg1 and iwdg2 support to stm32mp211 Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 11/13] arm64: dts: st: add iwdg1 and iwdg2 support to stm32mp231 Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 12/13] arm64: dts: st: add iwdg1 and iwdg2 support to stm32mp251 Antonio Borneo
2026-11-06 16:34 ` [PATCH v3 13/13] arm64: dts: st: enable iwdg2 on stm32mp2xx ST boards Antonio Borneo

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