diff --git a/arch/arm/dts/imx8mm-kontron-n801x-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-n801x-u-boot.dtsi
index 22d18e6..6882513 100644
--- a/arch/arm/dts/imx8mm-kontron-n801x-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-n801x-u-boot.dtsi
@@ -126,3 +126,7 @@
 &wdog1 {
 	u-boot,dm-spl;
 };
+
+&pinctrl_wdog {
+	u-boot,dm-spl;
+};
diff --git a/board/kontron/sl-mx8mm/spl.c b/board/kontron/sl-mx8mm/spl.c
index a58a75d..63361f1 100644
--- a/board/kontron/sl-mx8mm/spl.c
+++ b/board/kontron/sl-mx8mm/spl.c
@@ -32,7 +32,6 @@
 
 #define GPIO_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
 #define I2C_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
-#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
 
 #define TOUCH_RESET_GPIO	IMX_GPIO_NR(3, 23)
 
@@ -50,10 +49,6 @@
 	IMX8MM_PAD_SAI5_RXD2_GPIO3_IO23 | MUX_PAD_CTRL(GPIO_PAD_CTRL)
 };
 
-static iomux_v3_cfg_t const wdog_pads[] = {
-	IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
-};
-
 int spl_board_boot_device(enum boot_device boot_dev_spl)
 {
 	switch (boot_dev_spl) {
@@ -216,17 +211,6 @@
 		printf("Failed to find clock node. Check device tree\n");
 }
 
-int board_early_init_f(void)
-{
-	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
-
-	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
-
-	set_wdog_reset(wdog);
-
-	return 0;
-}
-
 static int power_init_board(void)
 {
 	struct udevice *dev;
@@ -261,8 +245,6 @@
 
 	init_uart_clk(2);
 
-	board_early_init_f();
-
 	timer_init();
 
 	/* Clear the BSS. */