diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c
index 3be875a45c83..0b718a94656a 100644
--- a/arch/mips/bcm63xx/clk.c
+++ b/arch/mips/bcm63xx/clk.c
@@ -316,6 +316,8 @@ static struct clk clk_periph = {
  */
 int clk_enable(struct clk *clk)
 {
+	if (!clk)
+		return 0;
 	mutex_lock(&clocks_mutex);
 	clk_enable_unlocked(clk);
 	mutex_unlock(&clocks_mutex);