drivers: rtc: pcf8563: check if the node has an interrupt pin Verify if the int1_gpios property exists for the specific node. Signed-off-by: Jakub Topic <jakub.topic@anitra.cz>

diff --git a/drivers/rtc/rtc_pcf8563.c b/drivers/rtc/rtc_pcf8563.c
index 4de14f6..c67f541 100644
--- a/drivers/rtc/rtc_pcf8563.c
+++ b/drivers/rtc/rtc_pcf8563.c

@@ -413,6 +413,10 @@
 	struct pcf8563_data *data = dev->data;
 	int ret;
 
+	if (config->int1.port == NULL) {
+		return -ENOTSUP;
+	}
+
 	if (id != 0) {
 		LOG_ERR("invalid ID %d", id);
 		return -EINVAL;
@@ -471,14 +475,14 @@
 
 	if (!device_is_ready(config->i2c.bus)) {
 		LOG_ERR("Failed to get pointer to %s device!", config->i2c.bus->name);
-		return -EINVAL;
+		return -ENODEV;
 	}
 
 	/* Check if it's alive. */
 	ret = i2c_reg_read_byte_dt(&config->i2c, PCF8563_CONTROL1_REGISTER, &reg);
 	if (ret) {
 		LOG_ERR("Failed to read from PCF85063! (err %i)", ret);
-		return -EIO;
+		return -ENODEV;
 	}
 
 	LOG_INF("%s is initialized!", dev->name);