+ return -EIO;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_DM_RTC
+static int rx8025_probe(struct udevice *dev)
+{
+ uchar buf[16];
+ int ret = 0;
+
+ if (i2c_get_chip_offset_len(dev) != 1)
+ ret = i2c_set_chip_offset_len(dev, 1);
+
+ if (ret)
+ return ret;
+
+ return dm_i2c_read(dev, 0, buf, sizeof(buf));
+}
+
+static const struct rtc_ops rx8025_rtc_ops = {
+ .get = rx8025_rtc_get,
+ .set = rx8025_rtc_set,
+ .reset = rx8025_rtc_reset,
+};
+
+static const struct udevice_id rx8025_rtc_ids[] = {
+ { .compatible = "epson,rx8025" },
+ { }
+};
+
+U_BOOT_DRIVER(rx8010sj_rtc) = {
+ .name = "rx8025_rtc",
+ .id = UCLASS_RTC,
+ .probe = rx8025_probe,
+ .of_match = rx8025_rtc_ids,
+ .ops = &rx8025_rtc_ops,
+};
+#else
+int rtc_get(struct rtc_time *tm)
+{
+ struct ludevice dev = {
+ .chip = CONFIG_SYS_I2C_RTC_ADDR,
+ };
+
+ return rx8025_rtc_get(&dev, tm);
+}
+
+int rtc_set(struct rtc_time *tm)
+{
+ struct ludevice dev = {
+ .chip = CONFIG_SYS_I2C_RTC_ADDR,
+ };
+
+ return rx8025_rtc_set(&dev, tm);