rtc: Set valid date after reset
Some RTC chips tend to set garbage date after reset.
This patch sets the date to 2000-01-01 00:00 immediatelly
after the RTC chip reset is issued using the "date reset"
command.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/common/cmd_date.c b/common/cmd_date.c
index e349166..4a653e5 100644
--- a/common/cmd_date.c
+++ b/common/cmd_date.c
@@ -27,6 +27,8 @@
int mk_date (const char *, struct rtc_time *);
+static struct rtc_time default_tm = { 0, 0, 0, 1, 1, 2000, 6, 0, 0 };
+
static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct rtc_time tm;
@@ -47,6 +49,9 @@
if (strcmp(argv[1],"reset") == 0) {
puts ("Reset RTC...\n");
rtc_reset ();
+ rcode = rtc_set(&default_tm);
+ if (rcode)
+ puts("## Failed to set date after RTC reset\n");
} else {
/* initialize tm with current time */
rcode = rtc_get (&tm);