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 --- common/cmd_date.c | 5 +++++ 1 file changed, 5 insertions(+)
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 @@ static const char * const weekdays[] = {
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 @@ static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 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);