arm64: dts: freescale: imx93-phycore-som: 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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
index 26bd801a49bb036330d02a1019595244395e8505..c6f5aa38ebf99b43adfb8bfd23f3859fcdb0fc8e 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
@@ -195,6 +195,9 @@
 
 /* Watchdog */
 &wdog3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_wdog>;
+       fsl,ext-reset-output;
        status = "okay";
 };
 
@@ -283,4 +286,10 @@
                        MX93_PAD_SD1_STROBE__USDHC1_STROBE      0x179e
                >;
        };
+
+       pinctrl_wdog: wdoggrp {
+               fsl,pins = <
+                       MX93_PAD_WDOG_ANY__WDOG1_WDOG_ANY       0x31e
+               >;
+       };
 };