rtc: davinci: fix date loaded on reset

On reset, the RTC loads the 2000-01-01 date with a wrong day of the
week (Sunday instead of Saturday).

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210602203805.11494-9-dariobin@libero.it

diff --git a/drivers/rtc/davinci.c b/drivers/rtc/davinci.c
index 21e5234..c7ce41b 100644 (file)
--- a/drivers/rtc/davinci.c
+++ b/drivers/rtc/davinci.c
@@ -290,6 +290,7 @@ static int omap_rtc_remove(struct udevice *dev)
 static int omap_rtc_probe(struct udevice *dev)
 {
        struct omap_rtc_priv *priv = dev_get_priv(dev);
+       struct rtc_time tm;
        u8 reg, mask, new_ctrl;
 
        priv->dev = dev;
@@ -380,6 +381,15 @@ static int omap_rtc_probe(struct udevice *dev)
        }
 
        omap_rtc_lock(priv);
+
+       if (omap_rtc_get(dev, &tm)) {
+               dev_err(dev, "failed to get datetime\n");
+       } else if (tm.tm_year == 2000 && tm.tm_mon == 1 && tm.tm_mday == 1 &&
+                  tm.tm_wday == 0) {
+               tm.tm_wday = 6;
+               omap_rtc_set(dev, &tm);
+       }
+
        return 0;
 }