diff --git a/board/theobroma-systems/ringneck_px30/ringneck-px30.c b/board/theobroma-systems/ringneck_px30/ringneck-px30.c
index bb1bb4acf5c..537ce0d1d11 100644
--- a/board/theobroma-systems/ringneck_px30/ringneck-px30.c
+++ b/board/theobroma-systems/ringneck_px30/ringneck-px30.c
@@ -16,12 +16,14 @@
 #include <usb.h>
 #include <dm/pinctrl.h>
 #include <dm/uclass-internal.h>
+#include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/setup.h>
 #include <asm/arch-rockchip/clock.h>
 #include <asm/arch-rockchip/hardware.h>
 #include <asm/arch-rockchip/periph.h>
 #include <asm/arch-rockchip/misc.h>
+#include <linux/delay.h>
 #include <power/regulator.h>
 #include <u-boot/sha256.h>
 
@@ -169,3 +171,54 @@ int misc_init_r(void)
 
 	return 0;
 }
+
+#define STM32_RST	100 /* GPIO3_A4 */
+#define STM32_BOOT	101 /* GPIO3_A5 */
+
+void spl_board_init(void)
+{
+	/*
+	 * Glitches on STM32_BOOT and STM32_RST lines during poweroff or power
+	 * on may put the STM32 companion microcontroller into DFU mode, let's
+	 * always reset it into normal mode instead.
+	 * Toggling the STM32_RST line is safe to do with the ATtiny companion
+	 * microcontroller variant because it will not trigger an MCU reset
+	 * since only a UPDI reset command will. Since a UPDI reset is difficult
+	 * to mistakenly trigger, glitches to the lines are theoretically also
+	 * incapable of triggering an actual ATtiny reset.
+	 */
+	int ret;
+
+	ret = gpio_request(STM32_RST, "STM32_RST");
+	if (ret) {
+		debug("Failed to request STM32_RST\n");
+		return;
+	}
+
+	ret = gpio_request(STM32_BOOT, "STM32_BOOT");
+	if (ret) {
+		debug("Failed to request STM32_BOOT\n");
+		return;
+	}
+
+	/* Rely on HW pull-down for inactive level */
+	ret = gpio_direction_input(STM32_BOOT);
+	if (ret) {
+		debug("Failed to configure STM32_BOOT as input\n");
+		return;
+	}
+
+	ret = gpio_direction_output(STM32_RST, 0);
+	if (ret) {
+		debug("Failed to configure STM32_RST as output low\n");
+		return;
+	}
+
+	mdelay(1);
+
+	ret = gpio_direction_output(STM32_RST, 1);
+	if (ret) {
+		debug("Failed to configure STM32_RST as output high\n");
+		return;
+	}
+}