* [PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset
@ 2025-06-24 6:13 Primoz Fiser
2025-06-24 18:17 ` Frank Li
0 siblings, 1 reply; 2+ messages in thread
From: Primoz Fiser @ 2025-06-24 6:13 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam
Cc: devicetree, imx, linux-arm-kernel, linux-kernel, upstream
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset
2025-06-24 6:13 [PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset Primoz Fiser
@ 2025-06-24 18:17 ` Frank Li
0 siblings, 0 replies; 2+ messages in thread
From: Frank Li @ 2025-06-24 18:17 UTC (permalink / raw)
To: Primoz Fiser
Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, devicetree,
imx, linux-arm-kernel, linux-kernel, upstream
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
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-06-24 6:13 [PATCH] arm64: dts: freescale: imx93-phycore-som: Fix watchdog reset Primoz Fiser
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