diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index d822acace1..8e069fbade 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -1071,12 +1071,27 @@ static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
 	return -ENOENT;
 }
 
+static int rk3399_clk_enable(struct clk *clk)
+{
+	switch (clk->id) {
+	case SCLK_PCIEPHY_REF:
+		/* do nothing, clk is enabled by default */
+		break;
+	default:
+		debug("%s: unsupported clk %ld\n", __func__, clk->id);
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
 static struct clk_ops rk3399_clk_ops = {
 	.get_rate = rk3399_clk_get_rate,
 	.set_rate = rk3399_clk_set_rate,
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.set_parent = rk3399_clk_set_parent,
 #endif
+	.enable = rk3399_clk_enable,
 };
 
 #ifdef CONFIG_SPL_BUILD