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rtc: Set valid date after reset

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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>
This commit is contained in:
Marek Vasut 2015-04-10 01:11:54 +02:00 • committed by Tom Rini
parent 23f2f4329d
commit 1a1fa24066
1 changed files with 5 additions and 0 deletions
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5
common/cmd_date.c
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@ -27,6 +27,8 @@ static const char * const weekdays[] = {
int mk_date (const char *, struct rtc_time *); 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[]) static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{ {
struct rtc_time tm; 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) { if (strcmp(argv[1],"reset") == 0) {
puts ("Reset RTC...\n"); puts ("Reset RTC...\n");
rtc_reset (); rtc_reset ();
rcode = rtc_set(&default_tm);
if (rcode)
puts("## Failed to set date after RTC reset\n");
} else { } else {
/* initialize tm with current time */ /* initialize tm with current time */
rcode = rtc_get (&tm); rcode = rtc_get (&tm);