linux-kernel - [PATCH v3] ARM: dts: stm32: Add IWDG2 EXTI interrupt mapping and mark as wakeup source

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Message-ID: <20240623195136.81522-1-marex@denx.de>
Date: Sun, 23 Jun 2024 21:51:08 +0200
From: Marek Vasut <marex@...x.de>
To: linux-arm-kernel@...ts.infradead.org
Cc: Marek Vasut <marex@...x.de>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Antonio Borneo <antonio.borneo@...s.st.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Marc Zyngier <maz@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Richard Cochran <richardcochran@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Wim Van Sebroeck <wim@...ux-watchdog.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-watchdog@...r.kernel.org
Subject: [PATCH v3] ARM: dts: stm32: Add IWDG2 EXTI interrupt mapping and mark as wakeup source

The IWDG2 is capable of generating pre-timeout interrupt, which can be used
to wake the system up from suspend to mem. Add the EXTI interrupt mapping
and mark the IWDG2 as wake up source.

Signed-off-by: Marek Vasut <marex@...x.de>
---
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: Antonio Borneo <antonio.borneo@...s.st.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc: Richard Cochran <richardcochran@...il.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc: devicetree@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-stm32@...md-mailman.stormreply.com
Cc: linux-watchdog@...r.kernel.org
---
V2: No change
V3: No change
---
 arch/arm/boot/dts/st/stm32mp151.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp151.dtsi b/arch/arm/boot/dts/st/stm32mp151.dtsi
index 1804e202eb425..68846699b26fd 100644
--- a/arch/arm/boot/dts/st/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp151.dtsi
@@ -355,6 +355,8 @@ iwdg2: watchdog@...02000 {
 			reg = <0x5a002000 0x400>;
 			clocks = <&rcc IWDG2>, <&rcc CK_LSI>;
 			clock-names = "pclk", "lsi";
+			interrupts-extended = <&exti 46 IRQ_TYPE_LEVEL_HIGH>;
+			wakeup-source;
 			status = "disabled";
 		};
 
-- 
2.43.0