NSH link management now works! The last fix was to the Ethernet drivers: They cannot disable clocking to the Ethernet blok on ifdown. Otherwise, we cannot communicate with the PHY

1 files changed, 22 insertions, 0 deletions

diff --git a/nuttx/arch/arm/src/sama5/sam_emaca.c b/nuttx/arch/arm/src/sama5/sam_emaca.c
index 701b3464e..3dfc0d07e 100644
--- a/nuttx/arch/arm/src/sama5/sam_emaca.c
+++ b/nuttx/arch/arm/src/sama5/sam_emaca.c
@@ -2892,6 +2892,26 @@ static void sam_rxreset(struct sam_emac_s *priv)
 
 static void sam_emac_reset(struct sam_emac_s *priv)
 {
+#ifdef CONFIG_NETDEV_PHY_IOCTL
+  /* We are supporting PHY IOCTLs, then do not reset the MAC.  If we do,
+   * then we cannot communicate with the PHY.  So, instead, just disable
+   * interrupts, cancel timers, and disable TX and RX.
+   */
+
+  sam_putreg(priv, SAM_EMAC_IDR, EMAC_INT_ALL);
+
+  /* Reset RX and TX logic */
+
+  sam_rxreset(priv);
+  sam_txreset(priv);
+
+  /* Disable Rx and Tx, plus the statistics registers. */
+
+  regval  = sam_getreg(priv, SAM_EMAC_NCR);
+  regval &= ~(EMAC_NCR_RXEN | EMAC_NCR_TXEN | EMAC_NCR_WESTAT);
+  sam_putreg(priv, SAM_EMAC_NCR, regval);
+
+#else
   /* Disable all EMAC interrupts */
 
   sam_putreg(priv, SAM_EMAC_IDR, EMAC_INT_ALL);
@@ -2908,6 +2928,8 @@ static void sam_emac_reset(struct sam_emac_s *priv)
   /* Disable clocking to the EMAC peripheral */
 
   sam_emac_disableclk();
+
+#endif
 }
 
 /****************************************************************************