diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c
index 05b40eacaf2f..5f1edeedd17f 100644
--- a/drivers/clk/rockchip/clk-pll.c
+++ b/drivers/clk/rockchip/clk-pll.c
@@ -191,6 +191,7 @@ rockchip_rk3066_pll_clk_set_by_auto(struct rockchip_clk_pll *pll,
 
 	nr_out = PLL_NR_MAX + 1;
 	no_out = 0;
+	nf_out = 0;
 
 	if (fin_hz == 0 || fout_hz == 0 || fout_hz == fin_hz)
 		return NULL;