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drivers: rtc: correctly set week day for mc146818 

The driver sets the weekday incorrectly when called by the
'date set' command.

Sunday is 1, Saturday is 7 unlike in U-Boot (see data sheet
https://www.nxp.com/docs/en/data-sheet/MC146818.pdf, table 3).

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2018-07-21 18:40:20 +02:00 committed by Tom Rini
parent a92b794f32
commit c5b53baeaa
1 changed files with 2 additions and 1 deletions
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3
drivers/rtc/mc146818.c
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@ -145,7 +145,8 @@ static int mc146818_set(struct rtc_time *tmp)
mc146818_write8(RTC_YEAR, bin2bcd(tmp->tm_year % 100)); mc146818_write8(RTC_YEAR, bin2bcd(tmp->tm_year % 100));
mc146818_write8(RTC_MONTH, bin2bcd(tmp->tm_mon)); mc146818_write8(RTC_MONTH, bin2bcd(tmp->tm_mon));
mc146818_write8(RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday)); /* Sunday = 1, Saturday = 7 */
mc146818_write8(RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday + 1));
mc146818_write8(RTC_DATE_OF_MONTH, bin2bcd(tmp->tm_mday)); mc146818_write8(RTC_DATE_OF_MONTH, bin2bcd(tmp->tm_mday));
mc146818_write8(RTC_HOURS, bin2bcd(tmp->tm_hour)); mc146818_write8(RTC_HOURS, bin2bcd(tmp->tm_hour));
mc146818_write8(RTC_MINUTES, bin2bcd(tmp->tm_min)); mc146818_write8(RTC_MINUTES, bin2bcd(tmp->tm_min));