From 282ab797bf689faaefacc080c45c2ee8e3d44e41 Mon Sep 17 00:00:00 2001
From: David Sidrane <David.Sidrane@NscDg.com>
Date: Thu, 8 Jul 2021 13:13:16 -0700
Subject: [PATCH] stm32h7:Ethernet Add some delays so that ifup() does not hog
 the CPU.

---
 arch/arm/src/stm32h7/stm32_ethernet.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/src/stm32h7/stm32_ethernet.c b/arch/arm/src/stm32h7/stm32_ethernet.c
index ae731f2330..49a3eae706 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)