[PATCH 3/5] arm64: dts: imx91-11x11-evk: add pinctrl for wdog3 reset
From: Joy Zou
Date: Tue May 19 2026 - 07:25:17 EST
The wdog3 node enables fsl,ext-reset-output to assert an external
reset signal upon watchdog timeout, but lacks pinctrl configuration
for the physical pad.
Without proper pinctrl settings, which could cause the watchdog timeout
to fail to reset the board hardware.
Add pinctrl configuration to ensure the pin is properly muxed and
configured for external watchdog reset functionality.
Signed-off-by: Joy Zou <joy.zou@xxxxxxx>
---
arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index de524f1921de808ee29895852fcbea37565a7e07..3fbdcb87a2f3acf44c15b98d7b6ee212fb62699f 100644
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
@@ -586,6 +586,8 @@ &usdhc3 {
};
&wdog3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
status = "okay";
};
@@ -947,4 +949,10 @@ MX91_PAD_SD3_DATA2__GPIO3_IO24 0x31e
MX91_PAD_SD3_DATA3__GPIO3_IO25 0x31e
>;
};
+
+ pinctrl_wdog: wdoggrp {
+ fsl,pins = <
+ MX91_PAD_WDOG_ANY__WDOG1_WDOG_ANY 0x31e
+ >;
+ };
};
--
2.37.1