From: Gatien Chevallier <gatien.chevallier@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>
Cc: <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Gatien Chevallier <gatien.chevallier@foss.st.com>
Subject: [PATCH v2 2/4] ARM: dts: stm32: add the ARM SMC watchdog in stm32mp131.dtsi
Date: Fri, 31 Oct 2025 11:00:41 +0100 [thread overview]
Message-ID: <20251031-iwdg1-v2-2-2dc6e0116725@foss.st.com> (raw)
In-Reply-To: <20251031-iwdg1-v2-0-2dc6e0116725@foss.st.com>
Add the arm_wdt node in the stm32mp131.dtsi SoC device tree file. When
the platform watchdog is managed by the secure world, SMC calls are used
to interact with it.
Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
---
arch/arm/boot/dts/st/stm32mp131.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index a18da1a04fe3..6506b9109b90 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -29,6 +29,12 @@ arm-pmu {
interrupt-parent = <&intc>;
};
+ arm_wdt: watchdog {
+ compatible = "arm,smc-wdt";
+ arm,smc-id = <0xbc000000>;
+ status = "disabled";
+ };
+
firmware {
optee {
method = "smc";
--
2.43.0
next prev parent reply other threads:[~2025-10-31 10:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-31 10:00 [PATCH v2 0/4] ARM: dts: stm32: watchdog updates on stm32mp13x platforms Gatien Chevallier
2025-10-31 10:00 ` [PATCH v2 1/4] ARM: dts: stm32: add iwdg1 node in stm32mp131.dtsi Gatien Chevallier
2025-10-31 10:00 ` Gatien Chevallier [this message]
2025-10-31 10:00 ` [PATCH v2 3/4] ARM: dts: stm32: enable the ARM SMC watchdog node in stm32mp135f-dk Gatien Chevallier
2025-10-31 10:00 ` [PATCH v2 4/4] ARM: dts: stm32: add the IWDG2 interrupt line in stm32mp131.dtsi Gatien Chevallier
2025-11-14 8:43 ` [PATCH v2 0/4] ARM: dts: stm32: watchdog updates on stm32mp13x platforms Alexandre TORGUE
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