diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 7daabffe4318..769694c7f86c 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -699,6 +699,7 @@
 #define MACB_CAPS_GEM_HAS_PTP			0x00000040
 #define MACB_CAPS_BD_RD_PREFETCH		0x00000080
 #define MACB_CAPS_NEEDS_RSTONUBR		0x00000100
+#define MACB_CAPS_CLK_HW_CHG			0x04000000
 #define MACB_CAPS_MACB_IS_EMAC			0x08000000
 #define MACB_CAPS_FIFO_MODE			0x10000000
 #define MACB_CAPS_GIGABIT_MODE_AVAILABLE	0x20000000
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 6d46153a7c4b..b23e986ac6dc 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -460,15 +460,14 @@ static void macb_init_buffers(struct macb *bp)
 
 /**
  * macb_set_tx_clk() - Set a clock to a new frequency
- * @clk:	Pointer to the clock to change
+ * @bp:		pointer to struct macb
  * @speed:	New frequency in Hz
- * @dev:	Pointer to the struct net_device
  */
-static void macb_set_tx_clk(struct clk *clk, int speed, struct net_device *dev)
+static void macb_set_tx_clk(struct macb *bp, int speed)
 {
 	long ferr, rate, rate_rounded;
 
-	if (!clk)
+	if (!bp->tx_clk || !(bp->caps & MACB_CAPS_CLK_HW_CHG))
 		return;
 
 	switch (speed) {
@@ -485,7 +484,7 @@ static void macb_set_tx_clk(struct clk *clk, int speed, struct net_device *dev)
 		return;
 	}
 
-	rate_rounded = clk_round_rate(clk, rate);
+	rate_rounded = clk_round_rate(bp->tx_clk, rate);
 	if (rate_rounded < 0)
 		return;
 
@@ -495,11 +494,12 @@ static void macb_set_tx_clk(struct clk *clk, int speed, struct net_device *dev)
 	ferr = abs(rate_rounded - rate);
 	ferr = DIV_ROUND_UP(ferr, rate / 100000);
 	if (ferr > 5)
-		netdev_warn(dev, "unable to generate target frequency: %ld Hz\n",
+		netdev_warn(bp->dev,
+			    "unable to generate target frequency: %ld Hz\n",
 			    rate);
 
-	if (clk_set_rate(clk, rate_rounded))
-		netdev_err(dev, "adjusting tx_clk failed.\n");
+	if (clk_set_rate(bp->tx_clk, rate_rounded))
+		netdev_err(bp->dev, "adjusting tx_clk failed.\n");
 }
 
 static void macb_validate(struct phylink_config *config,
@@ -751,7 +751,7 @@ static void macb_mac_link_up(struct phylink_config *config,
 		if (rx_pause)
 			ctrl |= MACB_BIT(PAE);
 
-		macb_set_tx_clk(bp->tx_clk, speed, ndev);
+		macb_set_tx_clk(bp, speed);
 
 		/* Initialize rings & buffers as clearing MACB_BIT(TE) in link down
 		 * cleared the pipeline and control registers.