From mboxrd@z Thu Jan 1 00:00:00 1970 From: Date: Mon, 05 Dec 2011 12:53:56 -0000 Subject: No subject Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de =09/* =09 * The meaning of MO_C bit varies by the chip type. =09 * From PCF8563 datasheet: this bit is toggled when the years =09 * register overflows from 99 to 00 =09 * 0 indicates the century is 20xx =09 * 1 indicates the century is 19xx =09 * From RTC8564 datasheet: this bit indicates change of =09 * century. When the year digit data overflows from 99 to 00, =09 * this bit is set. By presetting it to 0 while still in the =09 * 20th century, it will be set in year 2000, ... =09 * There seems no reliable way to know how the system use this =09 * bit. So let's do it heuristically, assuming we are live in =09 * 1970...2069. =09 */ As U-Boot's PCF8563 driver does not say it is supposed to support the RTC85= 64, make this driver compatible with Linux's by giving the opposite meaning to = the century bit. Signed-off-by: Beno=C3=AEt Th=C3=A9baudeau Cc: Wolfgang Denk --- .../drivers/rtc/pcf8563.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git u-boot-66714b1.orig/drivers/rtc/pcf8563.c u-boot-66714b1/drivers= /rtc/pcf8563.c index 339e5f6..a028533 100644 --- u-boot-66714b1.orig/drivers/rtc/pcf8563.c +++ u-boot-66714b1/drivers/rtc/pcf8563.c @@ -72,7 +72,7 @@ int rtc_get (struct rtc_time *tmp) =09tmp->tm_hour =3D bcd2bin (hour & 0x3F); =09tmp->tm_mday =3D bcd2bin (mday & 0x3F); =09tmp->tm_mon =3D bcd2bin (mon_cent & 0x1F); -=09tmp->tm_year =3D bcd2bin (year) + ((mon_cent & 0x80) ? 2000 : 1900); +=09tmp->tm_year =3D bcd2bin (year) + ((mon_cent & 0x80) ? 1900 : 2000); =09tmp->tm_wday =3D bcd2bin (wday & 0x07); =09tmp->tm_yday =3D 0; =09tmp->tm_isdst=3D 0; @@ -94,7 +94,7 @@ int rtc_set (struct rtc_time *tmp) =20 =09rtc_write (0x08, bin2bcd(tmp->tm_year % 100)); =20 -=09century =3D (tmp->tm_year >=3D 2000) ? 0x80 : 0; +=09century =3D (tmp->tm_year >=3D 2000) ? 0 : 0x80; =09rtc_write (0x07, bin2bcd(tmp->tm_mon) | century); =20 =09rtc_write (0x06, bin2bcd(tmp->tm_wday));