diff --git a/arch/arm/src/stm32h7/stm32_ethernet.c b/arch/arm/src/stm32h7/stm32_ethernet.c
index ae731f23308..49a3eae706a 100644
--- a/arch/arm/src/stm32h7/stm32_ethernet.c
+++ b/arch/arm/src/stm32h7/stm32_ethernet.c
@@ -40,6 +40,7 @@
 #include <nuttx/irq.h>
 #include <nuttx/wdog.h>
 #include <nuttx/wqueue.h>
+#include <nuttx/signal.h>
 #include <nuttx/net/mii.h>
 #include <nuttx/net/arp.h>
 #include <nuttx/net/netdev.h>
@@ -295,7 +296,7 @@
 
 #define PHY_READ_TIMEOUT  (0x0004ffff)
 #define PHY_WRITE_TIMEOUT (0x0004ffff)
-#define PHY_RETRY_TIMEOUT (0x0004ffff)
+#define PHY_RETRY_TIMEOUT (0x0001998)
 
 /* MAC reset ready delays in loop counts */
 
@@ -3553,6 +3554,8 @@ static int stm32_phyinit(struct stm32_ethmac_s *priv)
         {
           break;
         }
+
+      nxsig_usleep(100);
     }
 
   if (timeout >= PHY_RETRY_TIMEOUT)
@@ -3585,6 +3588,8 @@ static int stm32_phyinit(struct stm32_ethmac_s *priv)
         {
           break;
         }
+
+      nxsig_usleep(100);
     }
 
   if (timeout >= PHY_RETRY_TIMEOUT)