arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset

[PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset

Posted by Primoz Fiser 3 months, 2 weeks ago

On phyCORE-i.MX93 SoM, the SoC WDOG_ANY output line is connected to the
external pca9451a PMIC WDOG_B input. Apply pinctrl and set the property
"fsl,ext-reset-output" for watchdog to trigger board reset via PMIC on
timeout/reset.

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
---
 arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
index 5ee52774e7bf..729c26f9ac94 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
@@ -191,6 +191,9 @@ &usdhc1 {
 
 /* Watchdog */
 &wdog3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wdog>;
+	fsl,ext-reset-output;
 	status = "okay";
 };
 
@@ -279,4 +282,10 @@ MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x400013be
 			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x179e
 		>;
 	};
+
+	pinctrl_wdog: wdoggrp {
+		fsl,pins = <
+			MX93_PAD_WDOG_ANY__WDOG1_WDOG_ANY	0x31e
+		>;
+	};
 };
-- 
2.34.1

Re: [PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset

Posted by Frank Li 3 months, 2 weeks ago

On Tue, Jun 24, 2025 at 08:13:23AM +0200, Primoz Fiser wrote:

subject: It is not fix. suggested

"add watchdog ext-reset-output pin"

> On phyCORE-i.MX93 SoM, the SoC WDOG_ANY output line is connected to the
> external pca9451a PMIC WDOG_B input. Apply pinctrl and set the property
> "fsl,ext-reset-output" for watchdog to trigger board reset via PMIC on
> timeout/reset.
>
> Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
> ---
>  arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> index 5ee52774e7bf..729c26f9ac94 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> @@ -191,6 +191,9 @@ &usdhc1 {
>
>  /* Watchdog */
>  &wdog3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_wdog>;
> +	fsl,ext-reset-output;
>  	status = "okay";
>  };
>
> @@ -279,4 +282,10 @@ MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x400013be
>  			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x179e
>  		>;
>  	};
> +
> +	pinctrl_wdog: wdoggrp {
> +		fsl,pins = <
> +			MX93_PAD_WDOG_ANY__WDOG1_WDOG_ANY	0x31e
> +		>;
> +	};
>  };
> --
> 2.34.1
>