X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Frtc%2Fds3231.c;h=e5e1be134ccee80a4a9f3a56a7c7438c76e8c394;hb=d77af8a8c9f75cb8ffe7804dfe0c999cc727afdd;hp=c84bbc647f5fe78032d76bb02acf56e70ef8c548;hpb=1a4596601fd395f3afb8f82f3f840c5e00bdd57a;p=u-boot

diff --git a/drivers/rtc/ds3231.c b/drivers/rtc/ds3231.c
index c84bbc647f..e5e1be134c 100644
--- a/drivers/rtc/ds3231.c
+++ b/drivers/rtc/ds3231.c
@@ -49,6 +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);
@@ -141,6 +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