diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index 453c6dd8d2bf5657ce027bb2829b0a27bae695a5..1ac4ff4b2b22e5559900399bdb8336fa8c744d49 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -802,6 +802,10 @@ static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
 	case SCLK_EMMC:
 		ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
 		break;
+	case SCLK_MAC:
+		/* nothing to do, as this is an external clock */
+		ret = rate;
+		break;
 	case SCLK_I2C1:
 	case SCLK_I2C2:
 	case SCLK_I2C3: