1 files changed, 4 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32/mac_lld.c b/os/hal/platforms/STM32/mac_lld.c
index 2a91009c5..eb87d579d 100644
--- a/os/hal/platforms/STM32/mac_lld.c
+++ b/os/hal/platforms/STM32/mac_lld.c
@@ -306,8 +306,10 @@ void mac_lld_start(MACDriver *macp) {
   /* ISR vector enabled.*/
   nvicEnableVector(ETH_IRQn, CORTEX_PRIORITY_MASK(STM32_ETH1_IRQ_PRIORITY));
 
+#if STM32_ETH1_CHANGE_PHY_STATE
   /* PHY in power up mode.*/
   mii_write(macp, MII_BMCR, mii_read(macp, MII_BMCR) & ~BMCR_PDOWN);
+#endif
 
   /* MAC configuration.*/
   ETH->MACFFR    = 0;
@@ -361,8 +363,10 @@ void mac_lld_start(MACDriver *macp) {
 void mac_lld_stop(MACDriver *macp) {
 
   if (macp->state != MAC_STOP) {
+#if STM32_ETH1_CHANGE_PHY_STATE
     /* PHY in power down mode until the driver will be restarted.*/
     mii_write(macp, MII_BMCR, mii_read(macp, MII_BMCR) | BMCR_PDOWN);
+#endif
 
     /* MAC and DMA stopped.*/
     ETH->MACCR    = 0;