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[79.14.29.58]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48e71b723fcsm4084806f8f.14.2026.10.30.09.35.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Oct 2026 09:35:53 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: michael@amarulasolutions.com, linux-amarula@amarulasolutions.com, Dario Binacchi , Conor Dooley , Fabio Estevam , Frank Li , Krzysztof Kozlowski , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/5] arm64: dts: imx8mp-icore-mx8mp: enable the watchdog Date: Fri, 30 Oct 2026 17:35:40 +0100 Message-ID: <20261030163547.2682583-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261030163547.2682583-1-dario.binacchi@amarulasolutions.com> References: <20261030163547.2682583-1-dario.binacchi@amarulasolutions.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Enable the watchdog, asserting WDOG_B on timeout. On the SoM the signal is connected to the PMIC, which resets the whole board. Tested on the i.Core MX8M Plus Fast Ethernet variant. Signed-off-by: Dario Binacchi --- .../boot/dts/freescale/imx8mp-icore-mx8mp.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp.dtsi index affcc20b20c7..33066247cd2c 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp.dtsi @@ -122,6 +122,13 @@ &usdhc3 { status = "okay"; }; +&wdog1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_wdog>; + fsl,ext-reset-output; + status = "okay"; +}; + &iomuxc { pinctrl_i2c1: i2c1grp { fsl,pins = < @@ -183,4 +190,10 @@ MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7 0x1d6 MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE 0x196 >; }; + + pinctrl_wdog: wdoggrp { + fsl,pins = < + MX8MP_IOMUXC_GPIO1_IO02__WDOG1_WDOG_B 0xc6 + >; + }; }; -- 2.43.0