[PATCH 1/5] arm64: dts: imx8mp-icore-mx8mp: enable the watchdog
From: Dario Binacchi
Date: Fri Oct 30 2026 - 12:39:36 EST
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 <dario.binacchi@xxxxxxxxxxxxxxxxxxxx>
---
.../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