X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Frtc%2Fds3231.c;h=e5e1be134ccee80a4a9f3a56a7c7438c76e8c394;hb=0367bd4d605fa17b0e8ee8b45bc7afa6bd2307f9;hp=ae59cfb8697edb5a33f6c275b7df32c0243808ae;hpb=688d8f33f27ea596efb6632388ee60360996eed0;p=u-boot

diff --git a/drivers/rtc/ds3231.c b/drivers/rtc/ds3231.c
index ae59cfb869..e5e1be134c 100644
--- a/drivers/rtc/ds3231.c
+++ b/drivers/rtc/ds3231.c
@@ -2,23 +2,7 @@
  * (C) Copyright 2006
  * Markus Klotzbuecher, mk@denx.de
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -65,6 +49,8 @@
 #define RTC_STAT_BIT_A1F	0x1	/* Alarm 1 flag                 */
 #define RTC_STAT_BIT_A2F	0x2	/* Alarm 2 flag                 */
 #define RTC_STAT_BIT_OSF	0x80	/* Oscillator stop flag         */
+#define RTC_STAT_BIT_BB32KHZ	0x40	/* Battery backed 32KHz Output  */
+#define RTC_STAT_BIT_EN32KHZ	0x8	/* Enable 32KHz Output  */
 
 
 static uchar rtc_read (uchar reg);
@@ -157,6 +143,14 @@ void rtc_reset (void)
 	rtc_write (RTC_CTL_REG_ADDR, RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2);
 }
 
+/*
+ * Enable 32KHz output
+ */
+void rtc_enable_32khz_output(void)
+{
+	rtc_write(RTC_STAT_REG_ADDR,
+		  RTC_STAT_BIT_BB32KHZ | RTC_STAT_BIT_EN32KHZ);
+}
 
 /*
  * Helper functions