diff --git a/include/configs/stm32mp15_dh_dhsom.h b/include/configs/stm32mp15_dh_dhsom.h
index b68e153f10..c79f0272cb 100644
--- a/include/configs/stm32mp15_dh_dhsom.h
+++ b/include/configs/stm32mp15_dh_dhsom.h
@@ -8,6 +8,9 @@
 #ifndef __CONFIG_STM32MP15_DH_DHSOM_H__
 #define __CONFIG_STM32MP15_DH_DHSOM_H__
 
+/* PHY needs a longer autoneg timeout */
+#define PHY_ANEG_TIMEOUT		20000
+
 #define STM32MP_BOARD_EXTRA_ENV \
 	"usb_pgood_delay=1000\0" \
 	"update_sf=" /* Erase SPI NOR and install U-Boot from SD */	\