+struct rt1015_platform_data { + unsigned int power_up_delay;
power_up_delay_ms ? [...]
+static void rt1015_parse_dt(struct rt1015_priv *rt1015, struct device *dev) +{ + device_property_read_u32(dev, "realtek,power-up-delay", + &rt1015->pdata.power_up_delay); +}
Don't you need a DT binding description? And use delay-ms maybe?