diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index 01e209d88f5f..8cb9ffc73f6d 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -498,7 +498,7 @@ static const struct clk_ops pcf85063_clkout_ops = {
 static struct clk *pcf85063_clkout_register_clk(struct pcf85063 *pcf85063)
 {
 	struct clk *clk;
-	struct clk_init_data init;
+	struct clk_init_data init = {};
 	struct device_node *node = pcf85063->rtc->dev.parent->of_node;
 	struct device_node *fixed_clock;
 
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index a90dc940474b..7eebdb058067 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -425,7 +425,7 @@ static const struct clk_ops pcf8563_clkout_ops = {
 static struct clk *pcf8563_clkout_register_clk(struct pcf8563 *pcf8563)
 {
 	struct device_node *node = pcf8563->rtc->dev.parent->of_node;
-	struct clk_init_data init;
+	struct clk_init_data init = {};
 	struct clk *clk;
 	int ret;